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Patristic Research

What does Scripture say on the questions that divide Christian traditions, and how did the early church fathers read it? Every conclusion here links to its reasoning and sources.

Please read: this research was produced by an AI assistant. It is purely academic in nature, lacks the guidance of the Holy Spirit, and is not pastoral or ecclesial teaching. Test everything against Scripture (1 Thess 5:21) and with your church. Every conclusion links to its reasoning: see the method, the reasoning and source notes, and the project overview.

In the faith? How fully each tradition holds the first-order doctrines, the gospel core. All 16 first-order doctrines researched.

  • Catholic holds all 98% 33/33 first-order cells
  • Orthodox holds with qualifications 97% 33/33 first-order cells because of F12.1 (Salvation by grace through faith in Christ) 2/4
  • Oriental Orthodox holds with qualifications 98% ⚠ 32/33 first-order cells because of F12.1 (Salvation by grace through faith in Christ) 2/4
  • Lutheran holds all 99% 33/33 first-order cells
  • Anglican holds all 99% 33/33 first-order cells
  • Presbyterian holds all 99% 33/33 first-order cells
  • Reformed Baptist holds all 99% 32/33 first-order cells
  • General Baptist holds all 98% 33/33 first-order cells
  • Anabaptist holds with qualifications 93% 32/33 first-order cells because of F05.2 (Virgin birth and incarnation) 2/4

Weakest-link rule: the band depends on the lowest first-order question, not an average. If every scored first-order question scores at least 3/4 against Scripture, the band is holds all. If any scores below 3/4, it is holds with qualifications, and the questions responsible are named. If any scores 1/4 or below, it is denies one or more. The percentage is the mean and doesn't decide the band, so a lower average can still be "holds all". This marks recognition, not rank. Method · under each tradition's own first-order list.

Most correct: three ways to look at the results

1 · Closeness to Scripture

The site's primary measure: agreement with the grammatical-historical reading of the texts.

1 Lutheran128/134 cells (I 33/33 · II 50/52 · III 45/49) 92% 67/67 d
2 Anglican126/134 cells (I 33/33 · II 50/52 · III 43/49) 92% 66/67 d
3 Reformed Baptist124/134 cells (I 32/33 · II 49/52 · III 43/49) 91% 65/67 d
4 General Baptist116/134 cells (I 33/33 · II 45/52 · III 38/49) 91% 65/67 d
5 Presbyterian129/134 cells (I 33/33 · II 51/52 · III 45/49) 90% 67/67 d
6 Oriental Orthodox⚠ 107/134 cells (I 32/33 · II 42/52 · III 33/49) · low coverage 88% 62/67 d
7 Anabaptist111/134 cells (I 32/33 · II 43/52 · III 36/49) 87% 59/67 d
8 Orthodox118/134 cells (I 33/33 · II 50/52 · III 35/49) 85% 62/67 d
9 Catholic126/134 cells (I 33/33 · II 51/52 · III 42/49) 82% 65/67 d

2 · Closeness to the fathers

Agreement with the patristic verdicts to c. 750, weighted by how early the evidence is.

1 Oriental Orthodox⚠ 115/148 cells (I 31/33 · II 49/61 · III 35/54) · low coverage 94% 61/67 d
2 Orthodox128/148 cells (I 32/33 · II 58/61 · III 38/54) 92% 63/67 d
3 Catholic136/148 cells (I 32/33 · II 59/61 · III 45/54) 88% 65/67 d
4 Anglican136/148 cells (I 32/33 · II 58/61 · III 46/54) 85% 67/67 d
5 Lutheran138/148 cells (I 32/33 · II 58/61 · III 48/54) 83% 67/67 d
6 General Baptist126/148 cells (I 32/33 · II 53/61 · III 41/54) 81% 65/67 d
7 Anabaptist118/148 cells (I 31/33 · II 49/61 · III 38/54) 78% 60/67 d
8 Presbyterian138/148 cells (I 32/33 · II 59/61 · III 47/54) 77% 67/67 d
9 Reformed Baptist133/148 cells (I 31/33 · II 57/61 · III 45/54) 77% 67/67 d

3 · Your lens: weighted average

Set how much Scripture counts against the fathers. This is your lens, not the site's verdict.

50% Scripture / 50% fathers
1 Oriental Orthodox⚠ 107/134 cells (I 32/33 · II 42/52 · III 33/49) · low coverage 91% 62/67 d
2 Orthodox118/134 cells (I 33/33 · II 50/52 · III 35/49) 89% 63/67 d
3 Anglican126/134 cells (I 33/33 · II 50/52 · III 43/49) 88% 67/67 d
4 Lutheran128/134 cells (I 33/33 · II 50/52 · III 45/49) 88% 67/67 d
5 General Baptist116/134 cells (I 33/33 · II 45/52 · III 38/49) 86% 65/67 d
6 Catholic126/134 cells (I 33/33 · II 51/52 · III 42/49) 85% 65/67 d
7 Reformed Baptist124/134 cells (I 32/33 · II 49/52 · III 43/49) 84% 67/67 d
8 Presbyterian129/134 cells (I 33/33 · II 51/52 · III 45/49) 84% 67/67 d
9 Anabaptist111/134 cells (I 32/33 · II 43/52 · III 36/49) 83% 60/67 d

Each ranking averages the 67 researched doctrines (148 questions), weighting first-order doctrines 3, second-order 2 and third-order 1; each doctrine counts once, however many questions it has. Faded rows rest on fewer than half the doctrines. Each name shows its coverage: cells scored out of those scorable, by tier (I/II/III; the blended lens shows Scripture coverage). ⚠ marks coverage more than 10 points below the median (93% for Scripture, 90% for the fathers): a ranking based on fewer cells is less certain. How the tiers and lenses work · rankings under each tradition's own tiers · every score with its citation.

Per doctrine: Fathers (percent closeness; blank = not assessed)

DoctrineCatholicOrthodoxOriental OrthodoxLutheranAnglicanPresbyterianReformed BaptistGeneral BaptistAnabaptist
First-order (weight 3)
F01 The Trinity100100100100100100100100100
F02 Deity of Christ100100100100100100100100100
F03 True humanity of Christ10010010010010010010010085
F04 One person, God and man1001001001008888888863
F05 Virgin birth and incarnation10010010010010010010010064
F06 Deity and personhood of the Holy Spirit100100100100100100100100100
F07 Creation out of nothing100100100100100100100100100
F08 Sin and the need for grace100781001001001001009393
F09 Christ's saving death100100100100100100100100100
F10 Bodily resurrection of Christ1001001001001007910090100
F11 Ascension and session100100100100100100100100100
F12 Salvation by grace through faith in Christ100939310010010010010093
F13 Return of Christ and final judgement100100100100100100100100100
F14 General resurrection and eternal life100100100100100100100100100
F15 Authority and truthfulness of Scripture100100100100100100100100100
F16 One holy catholic and apostolic Church1001001008510085759166
Second-order (weight 2)
S01 Nature of justification556982677161617675
S02 Baptism: subjects8610010086868614
S03 Baptism: effect10010010010010025252525
S04 Eucharist: presence71100100624125252525
S05 Eucharist: sacrifice89100100778383778383
S06 Number and nature of sacraments648489566536367947
S07 Scripture and tradition679481759475678656
S08 Papal primacy and infallibility38100100747449497474
S09 Church government88100100638875388850
S10 Ordination to the presbyterate931001009393939375100
S11 Predestination and election869393395750579393
S12 Extent of the atonement1001001001001008181100100
S13 Perseverance of the saints100100100927533335092
S14 Original sin: guilt or corruption758575657565657575
S15 Filioque5088885050505050
S16 Chalcedonian and miaphysite wording9090607575757575
S17 Purgatory and prayers for the dead7410083422525252525
S18 Invocation of saints and Marian dogmas749494866060606060
S19 Veneration of icons and relics989898332727272727
S20 Penal substitution and satisfaction100251008510010010010075
S21 Divine simplicity and impassibility10088100100100100100100
S22 Marriage, divorce and remarriage886275258837505037
S23 Nature of saving faith757575505050505050
S24 Merit and good works92921005875757575100
Third-order (weight 1)
T01 Millennium7575757575757575
T02 Timing of end-times events1001001008110081819191
T03 Age of the earth and days of creation100100100100100929210092
T04 Mode of baptism25100100488937647525
T05 Frequency of communion50701001007010010010070
T06 Atonement models beyond the core759675797575757579
T07 Order of decrees50505075757550
T08 Origin of the soul757575757575757575
T09 Intermediate state949494949494949494
T10 Final punishment10083100100100100100100100
T11 Universal restoration as a hope10010010010010010010010091
T12 Spiritual gifts757575757575757575
T13 Sabbath and Lord's Day8910010010089787878100
T14 Regulative or normative worship10010010010010050688484
T15 Liturgical calendar8810010010010050758875
T16 Clerical celibacy75100100757575757575
T17 Fasting rules88100100637550506350
T18 Theosis vocabulary85100707070707070100
T19 Image of God949450507550505050
T20 Sword, magistracy and oaths50505050505088
T21 Women's ministries beyond the presbyterate50100100100100100100100
T22 Israel and the Church100100100100100
T23 Admission to the Lord's Table8810010081818110081100
T24 Liberty of conscience59757559597591100
T25 Communion in both kinds; reservation and adoration75755050252550
T26 Church discipline and shunning5075887510075100
T27 The law in the Christian life89100100100100100

Per doctrine: Your lens (weighted average) (percent closeness; blank = not assessed)

DoctrineCatholicOrthodoxOriental OrthodoxLutheranAnglicanPresbyterianReformed BaptistGeneral BaptistAnabaptist
First-order (weight 3)
F01 The Trinity100100100100100100100100100
F02 Deity of Christ100100100100100100100100100
F03 True humanity of Christ10010010010010010010010086
F04 One person, God and man1001001001008989898969
F05 Virgin birth and incarnation10010010010010010010010069
F06 Deity and personhood of the Holy Spirit100100100100100100100100100
F07 Creation out of nothing100100100100100100100100100
F08 Sin and the need for grace96851001001001001009292
F09 Christ's saving death100100100100100100100100100
F10 Bodily resurrection of Christ96969696968510091100
F11 Ascension and session100100100100100100100100100
F12 Salvation by grace through faith in Christ94848410010010010010090
F13 Return of Christ and final judgement100100100100100100100100100
F14 General resurrection and eternal life100100100100100100100100100
F15 Authority and truthfulness of Scripture100100100100100100100100100
F16 One holy catholic and apostolic Church1001001009210092839170
Second-order (weight 2)
S01 Nature of justification596685818372727965
S02 Baptism: subjects80888880808045
S03 Baptism: effect10096969610046464642
S04 Eucharist: presence86100100815838383825
S05 Eucharist: sacrifice869692848787848787
S06 Number and nature of sacraments608487657152528557
S07 Scripture and tradition597674859788809366
S08 Papal primacy and infallibility379595828257578282
S09 Church government748585698188598663
S10 Ordination to the presbyterate911001009191919175100
S11 Predestination and election878484637263729084
S12 Extent of the atonement979797979787879797
S13 Perseverance of the saints757575927563636379
S14 Original sin: guilt or corruption837575838883837583
S15 Filioque5094946363636363
S16 Chalcedonian and miaphysite wording9595558888888888
S17 Purgatory and prayers for the dead627574585050505050
S18 Invocation of saints and Marian dogmas567878878080808080
S19 Veneration of icons and relics808080534848485151
S20 Penal substitution and satisfaction88381009210010010010075
S21 Divine simplicity and impassibility8882888888888888
S22 Marriage, divorce and remarriage695669638269757569
S23 Nature of saving faith636363697575757575
S24 Merit and good works79791007188888888100
Third-order (weight 1)
T01 Millennium7575757575757575
T02 Timing of end-times events1001001008110081819090
T03 Age of the earth and days of creation100100100100100939310093
T04 Mode of baptism389696539047788838
T05 Frequency of communion50771001007710010010077
T06 Atonement models beyond the core759888837575757583
T07 Order of decrees63636375757563
T08 Origin of the soul757575757575757575
T09 Intermediate state959595959595959595
T10 Final punishment10086100100100100100100100
T11 Universal restoration as a hope10010010010010010010010096
T12 Spiritual gifts757575757575757575
T13 Sabbath and Lord's Day9010010010090818181100
T14 Regulative or normative worship969696969663808888
T15 Liturgical calendar81888810010063758175
T16 Clerical celibacy669797848484848484
T17 Fasting rules818888697563636963
T18 Theosis vocabulary8688787878787878100
T19 Image of God939350547563636363
T20 Sword, magistracy and oaths69696969696969
T21 Women's ministries beyond the presbyterate63888888888888100
T22 Israel and the Church10010010098100
T23 Admission to the Lord's Table811008891789110091100
T24 Liberty of conscience46637959557995100
T25 Communion in both kinds; reservation and adoration53631007373606073100
T26 Church discipline and shunning5075907510075100
T27 The law in the Christian life88100100100100100

Per doctrine: Scripture (percent closeness; blank = not assessed)

DoctrineCatholicOrthodoxOriental OrthodoxLutheranAnglicanPresbyterianReformed BaptistGeneral BaptistAnabaptist
First-order (weight 3)
F01 The Trinity100100100100100100100100100
F02 Deity of Christ100100100100100100100100100
F03 True humanity of Christ10010010010010010010010088
F04 One person, God and man1001001001008989898975
F05 Virgin birth and incarnation10010010010010010010010075
F06 Deity and personhood of the Holy Spirit100100100100100100100100100
F07 Creation out of nothing100100100100100100100100100
F08 Sin and the need for grace92921001001001001009292
F09 Christ's saving death100100100100100100100100100
F10 Bodily resurrection of Christ92929292929210092100
F11 Ascension and session100100100100100100100100100
F12 Salvation by grace through faith in Christ88757510010010010010088
F13 Return of Christ and final judgement100100100100100100100100100
F14 General resurrection and eternal life100100100100100100100100100
F15 Authority and truthfulness of Scripture100100100100100100100100100
F16 One holy catholic and apostolic Church100100100100100100929275
Second-order (weight 2)
S01 Nature of justification636388969683838156
S02 Baptism: subjects75757575757575
S03 Baptism: effect10092929210067676758
S04 Eucharist: presence1001001001007550505025
S05 Eucharist: sacrifice839283929292929292
S06 Number and nature of sacraments568484747868689168
S07 Scripture and tradition505867941001009210075
S08 Papal primacy and infallibility359090909065659090
S09 Church government6070707575100808575
S10 Ordination to the presbyterate901001009090909075100
S11 Predestination and election887575888875888875
S12 Extent of the atonement939393939393939393
S13 Perseverance of the saints505050927592927567
S14 Original sin: guilt or corruption9065751001001001007590
S15 Filioque501001007575757575
S16 Chalcedonian and miaphysite wording10010050100100100100100
S17 Purgatory and prayers for the dead505064757575757575
S18 Invocation of saints and Marian dogmas38636388100100100100100
S19 Veneration of icons and relics636363737070707575
S20 Penal substitution and satisfaction755010010010010010010075
S21 Divine simplicity and impassibility7575757575757575
S22 Marriage, divorce and remarriage50506310075100100100100
S23 Nature of saving faith50505088100100100100100
S24 Merit and good works676710083100100100100100
Third-order (weight 1)
T01 Millennium7575757575757575
T02 Timing of end-times events1001001008010080809090
T03 Age of the earth and days of creation100100100100100939310093
T04 Mode of baptism5092925892589210050
T05 Frequency of communion50831001008310010010083
T06 Atonement models beyond the core75100100887575757588
T07 Order of decrees75757575757575
T08 Origin of the soul757575757575757575
T09 Intermediate state959595959595959595
T10 Final punishment10089100100100100100100100
T11 Universal restoration as a hope100100100100100100100100
T12 Spiritual gifts757575757575757575
T13 Sabbath and Lord's Day9210010010092838383100
T14 Regulative or normative worship929292929275929292
T15 Liturgical calendar7575751001007575
T16 Clerical celibacy569494949494949494
T17 Fasting rules757575757575757575
T18 Theosis vocabulary8875888888888888100
T19 Image of God929250587575757575
T20 Sword, magistracy and oaths88888888888850
T21 Women's ministries beyond the presbyterate75757575757575100
T22 Israel and the Church10010010095100
T23 Admission to the Lord's Table757510075100100100100
T24 Liberty of conscience335083585083100100
T25 Communion in both kinds; reservation and adoration30501009595959595100
T26 Church discipline and shunning5075927510075100
T27 The law in the Christian life88100100100100100

The map of doctrines

Christian doctrines are sorted into three tiers (theological triage): first-order doctrines are essential to the gospel, second-order ones divide churches but not salvation, and third-order ones are debated within a single church. Each card is one doctrine; the greyed-out ones are not yet researched, so you can see how much of the map is covered. Cards marked tier contested are ones some traditions place in a different tier.

First-order doctrines weight 3

F01

The Trinity

One God in three co-equal, co-eternal persons.

2 questions
F02

Deity of Christ

The Son is true God, of one substance with the Father (Nicaea).

2 questions
F03

True humanity of Christ

The Son truly took full human nature (against Docetism and Apollinarianism).

2 questions
F04

One person, God and man

Christ is one person, true God and true man, without confusion or division.

2 questions
F05

Virgin birth and incarnation

Conceived by the Holy Spirit, born of the Virgin Mary.

2 questions
F06

Deity and personhood of the Holy Spirit

'The Lord, the giver of life' (381).

2 questions
F07

Creation out of nothing

God alone is eternal; all else is created and good.

2 questions
F08

Sin and the need for grace

All are sinners, cannot save themselves, and need grace (against Pelagius).

3 questions
F09

Christ's saving death

Christ died for our sins (1 Cor 15:3) and his death saves; how it saves is S20 and T6.

2 questions
F10

Bodily resurrection of Christ

Christ was truly raised in the body.

2 questions
F11

Ascension and session

Christ ascended and reigns.

2 questions
F12

Salvation by grace through faith in Christ

Salvation is God's gift in Christ, not earned.

2 questions
F13

Return of Christ and final judgement

He will come again to judge the living and the dead.

2 questions
F14

General resurrection and eternal life

The resurrection of the body and the life everlasting.

2 questions
F15

Authority and truthfulness of Scripture

Scripture is God's inspired word.

2 questions
F16

One holy catholic and apostolic Church

The Church confessed in the creeds.

2 questions

Second-order doctrines weight 2

S01

Nature of justification

Forensic imputation or infused/transformative righteousness; faith alone?

5 questions · tier contested
S02

Baptism: subjects

Infants, or believers only.

2 questions · tier contested
S03

Baptism: effect

Regeneration, or sign and seal; necessity.

2 questions
S04

Eucharist: presence

Transubstantiation, mystery, sacramental union, spiritual presence, memorial.

2 questions · tier contested
S05

Eucharist: sacrifice

Is the Mass or Liturgy a sacrifice?

2 questions
S06

Number and nature of sacraments

Seven, two, or ordinances; the other rites.

4 questions
S07

Scripture and tradition

Sola scriptura, or Scripture with tradition and magisterium; canon.

3 questions
S08

Papal primacy and infallibility

The Petrine office and Vatican I.

2 questions · tier contested
S09

Church government

Episcopal, presbyterian, congregational; apostolic succession.

2 questions · tier contested
S10

Ordination to the presbyterate

Classic positions on who may be ordained.

2 questions
S11

Predestination and election

Unconditional or conditional; free choice.

2 questions
S12

Extent of the atonement

Particular or general.

2 questions · tier contested
S13

Perseverance of the saints

Can a true believer finally fall away?

2 questions
S14

Original sin: guilt or corruption

Inherited guilt, or inherited mortality and corruption.

3 questions
S15

Filioque

The procession of the Holy Spirit.

2 questions
S16

Chalcedonian and miaphysite wording

'In two natures' or 'one incarnate nature'; two wills.

2 questions · tier contested
S17

Purgatory and prayers for the dead

Purification after death; praying for the departed.

2 questions
S18

Invocation of saints and Marian dogmas

Asking saints to pray; Immaculate Conception, Assumption.

3 questions · tier contested
S19

Veneration of icons and relics

Honouring or rejecting images and relics.

7 questions
S20

Penal substitution and satisfaction

Christ bore the penalty or satisfied divine justice in our place.

2 questions
S21

Divine simplicity and impassibility

God without parts or passions; essence and energies.

2 questions
S22

Marriage, divorce and remarriage

May a marriage be dissolved for adultery, with remarriage?

2 questions
S23

Nature of saving faith

Assent, trust, and the place of love in justifying faith.

2 questions
S24

Merit and good works

Whether the works of the justified merit eternal life; whether works are necessary for salvation.

2 questions

Third-order doctrines weight 1

T01

Millennium

Amillennial, premillennial, postmillennial.

2 questions
T02

Timing of end-times events

Tribulation and rapture questions, preterism.

2 questions
T03

Age of the earth and days of creation

Literal days or other readings.

2 questions
T04

Mode of baptism

Immersion, pouring, sprinkling.

2 questions
T05

Frequency of communion

Weekly, monthly, quarterly.

2 questions
T06

Atonement models beyond the core

Ransom, Christus Victor, recapitulation: emphasis and models.

2 questions
T07

Order of decrees

Supra- or infralapsarianism.

2 questions
T08

Origin of the soul

Traducianism or creationism.

2 questions
T09

Intermediate state

The soul's state between death and resurrection.

2 questions
T10

Final punishment

Eternal conscious punishment or annihilation.

2 questions
T11

Universal restoration as a hope

Gregory of Nyssa's hope, held as hope not dogma.

2 questions
T12

Spiritual gifts

Cessation or continuation.

2 questions
T13

Sabbath and Lord's Day

Strict sabbatarian or not.

2 questions
T14

Regulative or normative worship

Exclusive psalmody, instruments.

2 questions
T15

Liturgical calendar

Observing feasts and seasons.

2 questions
T16

Clerical celibacy

Discipline, not dogma.

2 questions
T17

Fasting rules

Practice and discipline.

2 questions
T18

Theosis vocabulary

Deification language or union with Christ.

2 questions
T19

Image of God

Is the image lost or marred; original righteousness.

2 questions
T20

Sword, magistracy and oaths

May Christians bear the sword, hold office and swear oaths?

2 questions
T21

Women's ministries beyond the presbyterate

Deaconesses; women baptizing and teaching.

2 questions
T22

Israel and the Church

Future conversion of Israel; the end of the ceremonial law.

2 questions
T23

Admission to the Lord's Table

Who may receive: the baptized, the examined, infants?

2 questions
T24

Liberty of conscience

Church precepts and the conscience; coercion in religion.

2 questions
T25

Communion in both kinds; reservation and adoration

The cup for the laity; reserving and adoring the consecrated elements.

2 questions
T26

Church discipline and shunning

Who excommunicates; avoiding the excommunicated.

2 questions
T27

The law in the Christian life

Whether the moral law binds Christians; whether the justified keep it perfectly.

2 questions

Shaped by

How much of each tradition's own confessional emphasis falls on first-, second- and third-order doctrines. Each doctrine gets 0–2 from the tradition's confessions, and each value is cited. This describes the tradition; it does not grade it. Ties among the top three are listed in tier order (S before T), then by number.

Catholic 1st 33% · 2nd 60% · 3rd 7% (58 points over 46 doctrines) Top distinctives: S01 Nature of justification (2/2, Trent VI); S06 Number and nature of sacraments (2/2, Trent VII, XIV, XXIV); S04 Eucharist: presence (2/2, Trent XIII)
Orthodox 1st 42% · 2nd 47% · 3rd 11% (45 points over 45 doctrines) Top distinctives: S19 Veneration of icons and relics (2/2, Nicaea II; Triumph of Orthodoxy); S18 Invocation of saints and Marian dogmas (2/2, Nicaea II; Theotokos in the liturgy); S15 Filioque (2/2, anti-filioque polemic; Photius)
Oriental Orthodox 1st 54% · 2nd 34% · 3rd 11% (35 points over 42 doctrines) Top distinctives: S16 Chalcedonian and miaphysite wording (2/2, anti-Chalcedonian identity (Severus)); S18 Invocation of saints and Marian dogmas (1/2, liturgical commemorations); S04 Eucharist: presence (1/2, liturgy)
Lutheran 1st 37% · 2nd 46% · 3rd 17% (52 points over 49 doctrines) Top distinctives: S01 Nature of justification (2/2, AC IV; Smalcald II.1 'first and chief article'); S04 Eucharist: presence (2/2, AC X; FC VII); S03 Baptism: effect (2/2, AC IX; Small Catechism IV)
Anglican 1st 39% · 2nd 51% · 3rd 10% (49 points over 46 doctrines) Top distinctives: S01 Nature of justification (2/2, Art. XI); S19 Veneration of icons and relics (2/2, Art. XXII; Homily against Peril of Idolatry); S05 Eucharist: sacrifice (2/2, Art. XXXI)
Presbyterian 1st 32% · 2nd 44% · 3rd 24% (62 points over 53 doctrines) Top distinctives: S07 Scripture and tradition (2/2, WCF I); S11 Predestination and election (2/2, WCF III); S01 Nature of justification (2/2, WCF XI)
Reformed Baptist 1st 33% · 2nd 43% · 3rd 23% (60 points over 50 doctrines) Top distinctives: S07 Scripture and tradition (2/2, 1689 1); S11 Predestination and election (2/2, 1689 3); S01 Nature of justification (2/2, 1689 11)
General Baptist 1st 49% · 2nd 41% · 3rd 10% (39 points over 40 doctrines) Top distinctives: S06 Number and nature of sacraments (2/2, SC 1660 art. 12 laying on of hands); S02 Baptism: subjects (2/2, SC 1660 art. 11); S11 Predestination and election (2/2, SC 1660 art. 8; Orthodox Creed 9)
Anabaptist 1st 50% · 2nd 29% · 3rd 21% (34 points over 45 doctrines) Top distinctives: S02 Baptism: subjects (2/2, Schleitheim 1; Dordrecht VII); T20 Sword, magistracy and oaths (2/2, Dordrecht XIV–XV; Schleitheim 6–7); T26 Church discipline and shunning (2/2, Schleitheim 2; Dordrecht XVI–XVII)
first-ordersecond-orderthird-order

The research at a glance

For each researched doctrine: what Scripture says, what the fathers (to about AD 750) say, and where they agree or diverge. Generated from the research data, so new doctrines appear here as they are added. How much weight to give Scripture against the fathers or church tradition is left to you: see Scripture and tradition for each tradition’s view of authority, and where tiers are contested for how the rankings change under each tradition’s own tiers.

First-order doctrines 16 of 16 researched · all 16

F01 The Trinity

Scripture
Father, Son and Spirit are named together as the one God (Matt 28:19; 2 Cor 13:14).
The fathers
From Ignatius to the councils: one God in three co-equal persons.
Agree / diverge
Fully agree.

Go deeper: Doctrine page → Reasoning → Sources: ignatius-tri-s1, tertullian-f01x-s1 · all 2 questions

F02 Deity of Christ

Scripture
Jesus is called God (John 1:1; 20:28; Titus 2:13) and is worshipped.
The fathers
From Ignatius (‘our God, Jesus Christ’) to Nicaea, the Son is true God.
Agree / diverge
Fully agree.

Go deeper: Doctrine page → Reasoning → Sources: ignatius-f02-s1, ignatius-f02-s2 · all 2 questions

F03 True humanity of Christ

Scripture
The Word became flesh, like us in every way except sin (John 1:14; Heb 2:17; 4:15).
The fathers
From Ignatius (’truly born, and ate and drank’) to Gregory (’not assumed, not healed’), Christ is fully human.
Agree / diverge
Fully agree.

Go deeper: Doctrine page → Reasoning → Sources: ignatius-f03-s1, gregory-nazianzen-f03-s2 · all 2 questions

F04 One person, God and man

Scripture
One subject is truly God and truly man (John 1:14; Col 2:9; Heb 4:15).
The fathers
One person, fully God and fully man; after 451 the wording splits between ’two natures’ and ‘one incarnate nature’.
Agree / diverge
Agree on substance.

Go deeper: Doctrine page → Reasoning → Sources: ignatius-chr-s1, ephesus-f04x-s1 · all 2 questions

F05 Virgin birth and incarnation

Scripture
Matthew and Luke both say Jesus was conceived by the Holy Spirit in the virgin Mary.
The fathers
Ignatius and Justin already confess it.
Agree / diverge
Fully agree.

Go deeper: Doctrine page → Reasoning → Sources: ignatius-f05-s1, ignatius-f05-s3 · all 2 questions

F06 Deity and personhood of the Holy Spirit

Scripture
The Spirit wills, teaches and can be lied to, and lying to him is lying to God (Acts 5:3–4).
The fathers
The creed of 381: the Spirit is ’the Lord and Giver of life’, worshipped with the Father and the Son.
Agree / diverge
Fully agree.

Go deeper: Doctrine page → Reasoning → Sources: constantinople-i-f06-s1, irenaeus-f06-s1 · all 2 questions

F07 Creation out of nothing

Scripture
Everything was made through the Word (John 1:3), not from pre-existing matter (Heb 11:3).
The fathers
From Hermas on: God ‘made all things out of nothing’.
Agree / diverge
Fully agree.

Go deeper: Doctrine page → Reasoning → Sources: hermas-f07-s1, irenaeus-f07-s2 · all 2 questions

F08 Sin and the need for grace

Scripture
All have sinned (Rom 3:23); no one comes to Christ unless drawn (John 6:44).
The fathers
A real fall passed death and corruption to all; the Western councils say grace precedes even the beginning of faith.
Agree / diverge
Agree.

Go deeper: Doctrine page → Reasoning → Sources: irenaeus-osn-s1, augustine-sal-s1, augustine-f08x-s1 · all 3 questions

F09 Christ's saving death

Scripture
‘Christ died for our sins’ is ‘of first importance’ (1 Cor 15:3).
The fathers
From Clement and Ignatius: Christ’s blood was shed ‘for our salvation’.
Agree / diverge
Fully agree.

Go deeper: Doctrine page → Reasoning → Sources: clement-of-rome-f09-s1, chrysostom-f09-s1 · all 2 questions

F10 Bodily resurrection of Christ

Scripture
The risen Christ has ‘flesh and bones’ (Luke 24:39), and without the resurrection faith is futile (1 Cor 15:17).
The fathers
Ignatius: ‘after His resurrection also He was still possessed of flesh’.
Agree / diverge
Fully agree.

Go deeper: Doctrine page → Reasoning → Sources: ignatius-f10-s1, ignatius-f10-s2 · all 2 questions

F11 Ascension and session

Scripture
Christ was taken up and is seated at God’s right hand (Acts 1; Eph 1:20).
The fathers
Polycarp and Irenaeus confess his ascension ‘in the flesh’ and his throne at the Father’s right hand.
Agree / diverge
Fully agree.

Go deeper: Doctrine page → Reasoning → Sources: polycarp-f11-s1, clement-of-rome-f11-s1 · all 2 questions

F12 Salvation by grace through faith in Christ

Scripture
Salvation is a gift, not a wage (Rom 4:4–5; Eph 2:8–9).
The fathers
No works come before being justified; it is God’s free grace.
Agree / diverge
Agree.

Go deeper: Doctrine page → Reasoning → Sources: clement-of-rome-s1, ignatius-f12x-s1 · all 2 questions

F13 Return of Christ and final judgement

Scripture
Christ will come again visibly and judge all (Acts 1:11; Matt 25:31–46).
The fathers
The Didache and Polycarp expect him ‘coming upon the clouds’ as ‘Judge of the living and the dead’.
Agree / diverge
Fully agree.

Go deeper: Doctrine page → Reasoning → Sources: didache-f13-s1, didache-f13-s2 · all 2 questions

F14 General resurrection and eternal life

Scripture
The dead will be raised bodily (1 Cor 15; John 5:28–29).
The fathers
The fathers confess the resurrection of the same flesh.
Agree / diverge
Fully agree.

Go deeper: Doctrine page → Reasoning → Sources: tertullian-aft-s3, irenaeus-f14x-s1 · all 2 questions

F15 Authority and truthfulness of Scripture

Scripture
Scripture is ‘God-breathed’ and ‘cannot be broken’ (2 Tim 3:16; John 10:35).
The fathers
Clement: ’the true utterances of the Holy Spirit’; Augustine: its authors were ‘completely free from error’.
Agree / diverge
Fully agree.

Go deeper: Doctrine page → Reasoning → Sources: clement-of-rome-f15-s1, irenaeus-f15-s2 · all 2 questions

F16 One holy catholic and apostolic Church

Scripture
There is one body of Christ, built on the apostles (Eph 2:20; 4:4).
The fathers
Ignatius first speaks of ’the Catholic Church’; Cyprian: ’no one can have God for his Father who has not the Church for his mother'.
Agree / diverge
Agree on the confession; the fathers tie it more closely to the visible communion.

Go deeper: Doctrine page → Reasoning → Sources: ignatius-f16-s1, nicaea-i-f16-s1 · all 2 questions

Second-order doctrines 24 of 24 researched · all 24

S01 Nature of justification tier contested

Scripture
Paul’s ‘justify’ is a legal declaration; works are excluded as its ground (Rom 4:4–5).
The fathers
The fathers hold declaring and making righteous together, tied to baptism.
Agree / diverge
Partly diverge.

Go deeper: Doctrine page → Reasoning → Sources: justin-martyr-s2, augustine-s1, john-of-damascus-s1 · all 5 questions

S02 Baptism: subjects tier contested

Scripture
No text explicitly commands or forbids infant baptism.
The fathers
Infant baptism is attested from about AD 200; some fathers advised delay.
Agree / diverge
Fathers settle what Scripture leaves open.

Go deeper: Doctrine page → Reasoning → Sources: cyprian-bap-s1, cyprian-s02x-s1 · all 2 questions

S03 Baptism: effect

Scripture
Several texts tie new birth and forgiveness to baptism (John 3:5; Acts 2:38; Titus 3:5).
The fathers
Baptism is the ordinary means of regeneration; martyrdom is an exception to its necessity.
Agree / diverge
Largely agree.

Go deeper: Doctrine page → Reasoning → Sources: justin-martyr-bap-s1, cyril-of-jerusalem-bap-s1 · all 2 questions

S04 Eucharist: presence tier contested

Scripture
‘This is my body’ (Mark 14:22); the bread is a participation in Christ’s body (1 Cor 10:16).
The fathers
A real, objective presence; the mode was not defined.
Agree / diverge
Agree on real presence.

Go deeper: Doctrine page → Reasoning → Sources: ignatius-euc-s1, ambrose-euc-s1 · all 2 questions

S05 Eucharist: sacrifice

Scripture
Christ was offered once for all (Heb 10:10–14).
The fathers
The fathers call the Eucharist a true sacrifice (Mal 1:11), without later propitiatory precision.
Agree / diverge
Partly diverge.

Go deeper: Doctrine page → Reasoning → Sources: didache-euc-s1, didache-s05x-s1 · all 2 questions

S06 Number and nature of sacraments

Scripture
Acts shows laying on of hands; James 5 commands anointing the sick.
The fathers
The rites existed early; seven sacraments as a system came later.
Agree / diverge
Mostly agree.

Go deeper: Doctrine page → Reasoning → Sources: tertullian-osr-s1, tertullian-osr-s3, chrysostom-osr-s1 · all 4 questions

S07 Scripture and tradition

Scripture
Scripture is God-breathed and sufficient (2 Tim 3:16–17).
The fathers
Scripture is the supreme proof, read within the rule of faith; canons differ East and West.
Agree / diverge
Largely agree.

Go deeper: Doctrine page → Reasoning → Sources: irenaeus-sct-s1, athanasius-sct-s3, irenaeus-sct-s3 · all 3 questions

S08 Papal primacy and infallibility tier contested

Scripture
Peter led the apostles but was corrected and was a fellow elder (Gal 2; 1 Pet 5:1).
The fathers
Rome had a primacy of honour; universal jurisdiction is absent; Gregory the Great rejected ‘universal bishop’.
Agree / diverge
Agree.

Go deeper: Doctrine page → Reasoning → Sources: clement-of-rome-pap-s1, cyprian-pap-s1 · all 2 questions

S09 Church government tier contested

Scripture
In the New Testament ‘bishop’ and ’elder’ name one office, held by several men in each church (Acts 20:17, 28; Titus 1:5–7).
The fathers
Clement attests succession; Ignatius already has one bishop over presbyters and deacons; Jerome later says bishops and presbyters were originally the same.
Agree / diverge
Partly diverge: the fathers quickly adopt a single bishop; Scripture shows plural elder-bishops.

Go deeper: Doctrine page → Reasoning → Sources: clement-of-rome-s09-s1, nicaea-i-s09-s1 · all 2 questions

S10 Ordination to the presbyterate

Scripture
Paul restricts the teaching and ruling office to men (1 Tim 2:12; 3:2); Phoebe serves as a deacon (Rom 16:1).
The fathers
No father admits women to the priesthood; deaconesses existed in parts of the East.
Agree / diverge
Agree.

Go deeper: Doctrine page → Reasoning → Sources: tertullian-s10-s1, nicaea-i-s10-s2 · all 2 questions

S11 Predestination and election

Scripture
Election rests on God’s purpose (Rom 9:11–16; Eph 1:5).
The fathers
Free choice is universally affirmed; predestination is split between Augustine and the earlier foreknowledge view.
Agree / diverge
Partly diverge.

Go deeper: Doctrine page → Reasoning → Sources: justin-martyr-sal-s1, augustine-sal-s2 · all 2 questions

S12 Extent of the atonement tier contested

Scripture
Scripture says Christ died for his sheep and church, and also ‘for all’ and ’the whole world’ (1 John 2:2).
The fathers
The fathers say Christ suffered ‘on behalf of all’; none in our sources limits the atonement to the elect.
Agree / diverge
Scripture has texts for both; the fathers lean universal.

Go deeper: Doctrine page → Reasoning → Sources: athanasius-s12-s1, chrysostom-s12-s1 · all 2 questions

S13 Perseverance of the saints

Scripture
Scripture pairs promises of preservation with real warnings.
The fathers
The fathers taught that the regenerate can fall away.
Agree / diverge
Partly diverge.

Go deeper: Doctrine page → Reasoning → Sources: augustine-sal-s3, augustine-s13x-s1 · all 2 questions

S14 Original sin: guilt or corruption

Scripture
Through one man sin and death came to all (Rom 5:12–19).
The fathers
East: inherited corruption and death; West: also inherited guilt (Augustine).
Agree / diverge
Emphasis differs.

Go deeper: Doctrine page → Reasoning → Sources: cyprian-osn-s1, augustine-osn-s2, chrysostom-osn-s1 · all 3 questions

S15 Filioque

Scripture
The Spirit ‘proceeds from the Father’ and is sent by the Son (John 15:26).
The fathers
East: from the Father through the Son; Augustine: also from the Son.
Agree / diverge
Scripture matches the Eastern wording.

Go deeper: Doctrine page → Reasoning → Sources: constantinople-i-tri-s1, ephesus-s15x-s1 · all 2 questions

S16 Chalcedonian and miaphysite wording tier contested

Scripture
Scripture teaches one Christ fully God and man, but uses neither nature formula; Gethsemane shows a human will.
The fathers
Chalcedon vs the Cyrilline formula split after 451; Constantinople III confesses two wills.
Agree / diverge
Formula open; two wills supported.

Go deeper: Doctrine page → Reasoning → Sources: chalcedon-chr-s1, gregory-nazianzen-chr-s1 · all 2 questions

S17 Purgatory and prayers for the dead

Scripture
Scripture gives no clear basis for purgatory or prayers for the dead (2 Macc 12 is deuterocanonical).
The fathers
Prayers for the dead from about 200; purification after death from Augustine.
Agree / diverge
Diverge.

Go deeper: Doctrine page → Reasoning → Sources: tertullian-aft-s2, augustine-aft-s2 · all 2 questions

S18 Invocation of saints and Marian dogmas tier contested

Scripture
The departed saints are alive and the martyrs pray (Rev 6:10), but Scripture never shows anyone asking them for prayer; it is silent on Mary’s conception and end.
The fathers
The martyrs were honoured from the 2nd century and their intercession sought in the liturgy by the 4th; Mary’s perpetual virginity was the consensus by then; the Marian dogmas are later.
Agree / diverge
Diverge: the practices are early but post-biblical; the Marian dogmas lack both.

Go deeper: Doctrine page → Reasoning → Sources: martyrdom-of-polycarp-s18-s1, protevangelium-s18-s1, augustine-s18-s1 · all 3 questions

S19 Veneration of icons and relics

Scripture
Scripture permits some made images but forbids bowing to them (Exod 20:5).
The fathers
Relics were honoured from about 155; icons were settled only in 787, after early opposition.
Agree / diverge
Diverge.

Go deeper: Doctrine page → Reasoning → Sources: martyrdom-of-polycarp-rel-s1, jerome-rel-s1, augustine-rel-s1 · all 7 questions

S20 Penal substitution and satisfaction

Scripture
Christ bore our sins in our place (Isa 53; 2 Cor 5:21; 1 Pet 2:24).
The fathers
Substitution is widely present; the satisfaction of God’s law, not honour-satisfaction.
Agree / diverge
Largely agree.

Go deeper: Doctrine page → Reasoning → Sources: justin-martyr-atn-s1, athanasius-atn-s1 · all 2 questions

S21 Divine simplicity and impassibility

Scripture
Scripture says God does not change like a man and that Christ suffered in the flesh; it never defines simplicity, which is inferred from God’s unity and unchangeableness.
The fathers
From Irenaeus on, God is ‘simple, uncompounded’; from Ignatius on, the impassible God suffers in Christ’s flesh.
Agree / diverge
Agree: the fathers spell out what Scripture implies.

Go deeper: Doctrine page → Reasoning → Sources: irenaeus-s21-s1, ignatius-s21-s1 · all 2 questions

S22 Marriage, divorce and remarriage

Scripture
Jesus allows divorce for sexual immorality (Matt 19:9), and Paul frees a believer deserted by an unbelieving spouse; whether remarriage follows is debated, though the setting favours it.
The fathers
The earliest fathers allowed separation for adultery but not remarriage; by the 4th century Basil tolerated some remarriage, while Augustine forbade it.
Agree / diverge
Diverge: the early fathers are stricter than Matthew’s exception.

Go deeper: Doctrine page → Reasoning → Sources: hermas-s22-s1, tertullian-s22-s1 · all 2 questions

S23 Nature of saving faith

Scripture
Faith includes believing the truth and relying on Christ; bare belief, like the demons’, does not save; faith works through love.
The fathers
Clement defined faith as ’the assent of piety’; Augustine said believing in Christ means loving him and being joined to him.
Agree / diverge
Partly agree: both reject bare assent, but they place love differently.

Go deeper: Doctrine page → Reasoning → Sources: clement-of-alexandria-s23-s1, augustine-s23-s3 · all 2 questions

S24 Merit and good works

Scripture
Eternal life is God’s free gift (Rom 6:23), yet God rewards works (Matt 5:12) and holiness is required (Heb 12:14).
The fathers
Ignatius: works receive recompense; Augustine: God crowns his own gifts; saving faith works by love.
Agree / diverge
Agree that works are necessary and rewarded; differ on the word ‘merit’.

Go deeper: Doctrine page → Reasoning → Sources: ignatius-s24-s1, polycarp-s24-s1 · all 2 questions

Third-order doctrines 27 of 27 researched · all 27

T01 Millennium

Scripture
Only Rev 20 mentions a thousand-year reign, and it can be read as future or present.
The fathers
Papias, Justin and Irenaeus expected an earthly reign; Justin admitted good Christians disagreed; Augustine read it as the present reign of the Church.
Agree / diverge
Both open.

Go deeper: Doctrine page → Reasoning → Sources: irenaeus-t01-s1, augustine-t01-s2 · all 2 questions

T02 Timing of end-times events

Scripture
The elect are gathered ‘after the tribulation’ (Matt 24:29–31), after the man of lawlessness appears (2 Thess 2:3).
The fathers
The Didache expects the church to face the ‘world-deceiver’ before the Lord comes on the clouds.
Agree / diverge
Agree.

Go deeper: Doctrine page → Reasoning → Sources: didache-t02-s1, irenaeus-t02-s1 · all 2 questions

T03 Age of the earth and days of creation

Scripture
Genesis 1 has six numbered days with evening and morning, and Exodus 20:11 rests the Sabbath on them.
The fathers
The fathers thought the world under 6000 years old; Basil took the days as ordinary days, Augustine as an instantaneous creation described in days.
Agree / diverge
Mostly open.

Go deeper: Doctrine page → Reasoning → Sources: basil-t03-s1, augustine-t03-s3 · all 2 questions

T04 Mode of baptism

Scripture
The word and the burial imagery favour immersion (Rom 6:4).
The fathers
Threefold immersion was the norm; pouring was allowed in need.
Agree / diverge
Agree.

Go deeper: Doctrine page → Reasoning → Sources: didache-bap-s1, didache-t04x-s1 · all 2 questions

T05 Frequency of communion

Scripture
The first Christians gathered on the first day of the week ’to break bread’ (Acts 20:7).
The fathers
The Didache and Justin show the Supper every Sunday, with all present receiving.
Agree / diverge
Agree.

Go deeper: Doctrine page → Reasoning → Sources: didache-t05-s1, cyprian-t05-s1 · all 2 questions

T06 Atonement models beyond the core

Scripture
Christ’s death is a victory, ransom and sacrifice (Col 2:15; Mark 10:45).
The fathers
Victory and recapitulation are pervasive; the ransom-to-the-devil idea was disputed.
Agree / diverge
Agree.

Go deeper: Doctrine page → Reasoning → Sources: irenaeus-atn-s2, irenaeus-atn-s1 · all 2 questions

T07 Order of decrees

Scripture
Scripture teaches election before creation (Eph 1:4) but does not order God’s decrees.
The fathers
The fathers never discussed it.
Agree / diverge
Not applicable.

Go deeper: Doctrine page → Reasoning → Sources: augustine-t07-s1 · all 2 questions

T08 Origin of the soul

Scripture
Scripture says God gives the spirit (Eccl 12:7) but does not say how each soul begins.
The fathers
Tertullian held the soul passes from the parents; Augustine could not decide.
Agree / diverge
Both open.

Go deeper: Doctrine page → Reasoning → Sources: tertullian-t08-s1, justin-martyr-t08-s1 · all 2 questions

T09 Intermediate state

Scripture
The dead are conscious with Christ or in torment (Luke 16; Phil 1:23).
The fathers
A conscious intermediate state of rest or affliction.
Agree / diverge
Agree.

Go deeper: Doctrine page → Reasoning → Sources: tertullian-aft-s1, augustine-t09x-s1 · all 2 questions

T10 Final punishment

Scripture
Jesus speaks of eternal punishment (Matt 25:46).
The fathers
Eternal punishment was the consensus; restoration a minority; annihilation negligible.
Agree / diverge
Agree.

Go deeper: Doctrine page → Reasoning → Sources: ignatius-aft-s1, augustine-t10x-s1 · all 2 questions

T11 Universal restoration as a hope

Scripture
Jesus sets ’eternal punishment’ beside ’eternal life’ (Matt 25:46).
The fathers
Origen and Gregory of Nyssa hoped all would be restored; most fathers did not, and the Origenist form was condemned in 553.
Agree / diverge
Agree against it as doctrine.

Go deeper: Doctrine page → Reasoning → Sources: gregory-of-nyssa-t11-s1, constantinople-553-t11-s1 · all 2 questions

T12 Spiritual gifts

Scripture
Paul says prophecy and tongues cease ‘when the perfect comes’ (1 Cor 13:10) but does not say when.
The fathers
Irenaeus reports prophecy, tongues and healings in his day; Chrysostom says they had ceased by his.
Agree / diverge
Both open.

Go deeper: Doctrine page → Reasoning → Sources: irenaeus-t12-s1, irenaeus-t12-s4 · all 2 questions

T13 Sabbath and Lord's Day

Scripture
Christians met on the first day (Acts 20:7); Paul calls the Sabbath a shadow fulfilled in Christ (Col 2:16–17).
The fathers
Ignatius: Christians ’no longer observing the Sabbath, but living in the observance of the Lord’s Day'.
Agree / diverge
Agree.

Go deeper: Doctrine page → Reasoning → Sources: didache-t13-s1, ignatius-t13-s2 · all 2 questions

T14 Regulative or normative worship

Scripture
Scripture forbids self-made worship (Col 2:23) yet leaves order to the church (1 Cor 14:40).
The fathers
Tertullian and Basil accepted customs with no explicit Scripture command.
Agree / diverge
Fathers normative; Scripture open.

Go deeper: Doctrine page → Reasoning → Sources: tertullian-t14-s1, eusebius-t14-s1 · all 2 questions

T15 Liturgical calendar

Scripture
Paul calls Christ ‘our Passover’ and says ’let us keep the feast’ (1 Cor 5:7–8), but leaves days to conscience (Rom 14:5).
The fathers
Polycarp kept the yearly Pascha as he had with the apostle John.
Agree / diverge
Agree.

Go deeper: Doctrine page → Reasoning → Sources: eusebius-t15-s1, eusebius-t15-s2 · all 2 questions

T16 Clerical celibacy

Scripture
Elders are ‘husband of one wife’ (1 Tim 3:2), and Peter had a wife (1 Cor 9:5).
The fathers
Married clergy were normal; at Nicaea Paphnutius defended them; the West later required continence.
Agree / diverge
Agree on permission.

Go deeper: Doctrine page → Reasoning → Sources: socrates-t16-s1, neocaesarea-t16-s1 · all 2 questions

T17 Fasting rules

Scripture
Jesus expects his followers to fast (Matt 6:16; 9:15) but sets no days.
The fathers
The Didache sets Wednesday and Friday fasts.
Agree / diverge
Fathers add fixed days.

Go deeper: Doctrine page → Reasoning → Sources: didache-t17-s1, didache-t17-s2 · all 2 questions

T18 Theosis vocabulary

Scripture
Believers become ‘partakers of the divine nature’ (2 Pet 1:4) and are transformed into Christ’s image.
The fathers
Irenaeus and Athanasius: Christ became what we are so that we might become what he is.
Agree / diverge
Agree on substance.

Go deeper: Doctrine page → Reasoning → Sources: irenaeus-t18-s1, basil-t18-s1 · all 2 questions

T19 Image of God

Scripture
Fallen people still bear God’s image (Gen 9:6; Jas 3:9), and it is renewed in Christ ‘in true righteousness and holiness’ (Eph 4:24).
The fathers
Irenaeus: the image remains but the likeness was lost; Athanasius: the Word came to re-create the image.
Agree / diverge
Agree on T19.1; T19.2 is framed differently.

Go deeper: Doctrine page → Reasoning → Sources: irenaeus-t19-s1, athanasius-t19-s2 · all 2 questions

T20 Sword, magistracy and oaths

Scripture
Rulers bear the sword as God’s servants (Rom 13:4); soldiers are not told to resign (Luke 3:14); Jesus forbids casual oaths, but God and Paul swear solemnly.
The fathers
Origen said Christians pray rather than fight, and Justin read ‘swear not at all’ strictly; Augustine allowed both.
Agree / diverge
Diverge: the earliest fathers are stricter than Scripture’s examples.

Go deeper: Doctrine page → Reasoning → Sources: origen-t20-s1, justin-martyr-t20-s1 · all 2 questions

T21 Women's ministries beyond the presbyterate

Scripture
Phoebe is a ‘deacon’ of her church (Rom 16:1); Paul restricts women’s public teaching (1 Tim 2:12) but expects them to pray and prophesy.
The fathers
Deaconesses appear by the 4th century; Tertullian and the Apostolic Constitutions forbid women to teach in church or baptize.
Agree / diverge
Agree broadly.

Go deeper: Doctrine page → Reasoning → Sources: nicaea-i-t21-s1, tertullian-t21-s1 · all 2 questions

T22 Israel and the Church

Scripture
Paul expects that ‘all Israel will be saved’ (Rom 11:26) and says the ceremonial law was a shadow fulfilled in Christ (Col 2:17).
The fathers
Ignatius and Justin say the law has ended and Christians are the true Israel; Augustine reports a common hope that the Jews will turn to Christ.
Agree / diverge
Agree.

Go deeper: Doctrine page → Reasoning → Sources: augustine-t22-s1, ignatius-t22-s1 · all 2 questions

T23 Admission to the Lord's Table

Scripture
Each must ’examine himself’ before eating (1 Cor 11:28); Scripture does not say whether baptized infants share the meal.
The fathers
The Didache admits only the baptized; Justin only believers living as Christians; Cyprian shows infants given the cup.
Agree / diverge
Agree on fencing; Scripture silent on infants.

Go deeper: Doctrine page → Reasoning → Sources: didache-t23-s1, cyprian-t23-s1 · all 2 questions

T24 Liberty of conscience

Scripture
Jesus rejects ’the commandments of men’ as doctrine (Matt 15:9) and leaves the tares until the harvest (Matt 13:30); the church has no civil sword.
The fathers
Tertullian and Lactantius said religion cannot be compelled; Augustine later defended compelling the Donatists.
Agree / diverge
Agree early; later divergence.

Go deeper: Doctrine page → Reasoning → Sources: ignatius-t24-s1, tertullian-t24-s1 · all 2 questions

T25 Communion in both kinds; reservation and adoration

Scripture
‘Drink of it, all of you’ (Matt 26:27); the Supper is given to be eaten and drunk.
The fathers
Justin: deacons give bread and wine to each and carry portions to the absent; Augustine: no one eats that flesh without first worshipping.
Agree / diverge
Agree on the cup; Scripture is silent on reservation.

Go deeper: Doctrine page → Reasoning → Sources: justin-t25-s1, justin-t25-s1 · all 2 questions

T26 Church discipline and shunning

Scripture
‘Tell it to the church’ (Matt 18:17); ’not even to eat with such a one’ (1 Cor 5:11), yet ‘warn him as a brother’ (2 Thess 3:15).
The fathers
Tertullian: the sinner is severed from the congregation’s prayer and fellowship; John and Polycarp avoided notorious heretics.
Agree / diverge
Agree.

Go deeper: Doctrine page → Reasoning → Sources: tertullian-t26-s1, irenaeus-t26-s1 · all 2 questions

T27 The law in the Christian life

Scripture
Christ did not abolish the law (Matt 5:17), yet ‘if we say we have no sin, we deceive ourselves’ (1 John 1:8).
The fathers
Irenaeus: the Decalogue remains with us; Carthage 418: the saints truly sin.
Agree / diverge
Agree.

Go deeper: Doctrine page → Reasoning → Sources: irenaeus-t27-s1, carthage-t27-s1 · all 2 questions

How to go deeper

Every doctrine sits in a tier and is built in three layers, and each links to the one beneath it:

  1. Doctrine page: the research questions, a verdict for each with a confidence level, and how nine traditions (Catholic, Orthodox, Oriental Orthodox, Lutheran, Anglican, Presbyterian, Reformed Baptist, General Baptist and Anabaptist) developed after 750.
  2. Reasoning: numbered steps for each verdict, with the weighing made explicit (which readings were considered and why one was preferred).
  3. Sources: notes on each father and council, citing the exact passage, and exegesis of the key Scripture texts in Greek and Hebrew.

New to the vocabulary? Start with the glossary. For how the closeness measures are calculated, see the method and every score with its citation. The project README and conventions describe the sources and format.