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S13 reasoning: Perseverance of the saints

Reasoning steps: Perseverance of the saints

Verdicts: S13 · Perseverance of the saints. Shared notes and post-750 development: salvation.

S13.1 (was salvation/S4): Perseverance and assurance

Step S13.1.1: Scripture

John 10:28–29; Phil 1:6; Rom 8:38–39 vs. Heb 6:4–6; 1 Cor 9:27; 10:12.

Step S13.1.2: Patristic evidence

augustine-sal-s3 (some regenerated do not persevere), augustine-sal-s4 (uncertain while alive).

Step S13.1.3: Weighing decision

Reading A: the truly regenerate can lose grace, and final perseverance is a gift that cannot be known with certainty. Reading B: all the regenerate persevere, and assurance of this is possible. A is chosen for the fathers. Even Augustine, the strongest predestinarian, separates regeneration from perseverance and denies certainty. B is a Presbyterian development.

  • Confidence: High (for Augustine); medium (whole-patristic, few other witnesses verified)

Step S13.1.4: Source-proximity weighing

See the proximity tiers.

  • Scripture (benchmark): Promises of preservation (John 10:28–29; Phil 1:6) alongside real warnings (Heb 6:4–6; 1 Cor 10:12); assurance is offered (1 John 5:13). (Scripture confidence: low-medium)
  • Key sources by tier: Augustine (T3, w 0.6); Augustine (T3, w 0.6). Proximity factor: 0.6 (mean tier weight of 2 key source(s)).
  • Assessment: The verdict rests on Augustine (T3). Scripture offers assurance (1 John 5:13) as well as warnings. The later Tridentine denial of ordinary assurance (canon 16) lacks biblical support, and so does any claim that assurance of final perseverance comes without the warnings. Verdict unchanged (it reports the fathers).

S13.2: Can a believer be assured of salvation?

Step S13.2.1: Scripture

1 John 5:13 (’that you may know that you have eternal life’); Rom 8:16; 2 Pet 1:10 (‘make your calling and election sure’); 1 Cor 10:12.

Step S13.2.2: Patristic evidence

Augustine (Era III, On Rebuke and Grace 40) holds that such warnings are ‘spoken to saints who will persevere, as if it were reckoned uncertain whether they will persevere’, because ‘it is well for them not to be high-minded, but to fear’. Sources: augustine-s13x-s1.

Step S13.2.3: Weighing decision

Scripture says believers may ‘know’ they have life, with warnings against presumption. Augustine treats final perseverance as unknowable in this life. Verdict: Scripture grants present assurance; Era III denies certainty of final perseverance. The two measures pull apart.

  • Confidence: Medium.

Step S13.2.4: Source-proximity weighing

  • Scripture (benchmark): ‘That you may know that you have eternal life’ (1 John 5:13). (Scripture confidence: medium-high)
  • Assessment: Scripture favours assurance; Era III favours fear and uncertainty. Scored separately.

S13.2 by tradition

  • Catholic (fathers 4/4; Scripture 2/4): Trent VI ch. 9: no one can know ‘with a certainty of faith’ that he has obtained grace (verified).
  • Orthodox (fathers 4/4; Scripture 2/4): No certainty of final salvation.
  • Oriental Orthodox (fathers n/a; Scripture n/a): Not assessed: no Oriental Orthodox text on assurance was located online.
  • Lutheran (fathers 3/4; Scripture 4/4): Assurance through the promise: Apology IV, Christ’s satisfaction ‘presented to us that we might be sure that … we have a gracious God’ (verified).
  • Anglican (fathers 3/4; Scripture 3/4): Art. XVII: ‘sweet, pleasant, and unspeakable comfort’ to the godly (verified).
  • Presbyterian (fathers 2/4; Scripture 4/4): WCF XVIII.1: believers ‘may in this life be certainly assured’ (verified).
  • Reformed Baptist (fathers 2/4; Scripture 4/4): 1689 18.1 same (verified).
  • General Baptist (fathers n/a; Scripture n/a): Not assessed: no General Baptist confessional text on assurance was located (Orthodox Creed OCR too poor to search reliably).
  • Anabaptist (fathers 3/4; Scripture 3/4): Not addressed directly.
  • S13.2 (fathers n/a; Scripture n/a): Not addressed: Orthodox Creed (1679) art. XXXVI (Perseverance) treats perseverance, not assurance (verified)

S13.3: Does a grave (‘mortal’) sin cost a believer the grace of justification?

Step S13.3.1: Scripture

John writes, ‘There is a sin leading to death’, and ’there is a sin not leading to death’ (1 John 5:16–17). Paul lists the works of the flesh and warns ’that those who practice such things will not inherit the kingdom of God’ (Gal 5:21; also 1 Cor 6:9–10), then tells the Corinthians, ‘such were some of you; but you were washed, but you were sanctified, but you were justified’ (1 Cor 6:11). After his adultery and murder David prays, ‘do not take Your Holy Spirit from me’ (Ps 51:11), and Nathan tells him, ‘Yahweh also has taken away your sin; you shall not die’ (2 Sam 12:13). Jesus says of his sheep, ’they will never perish—ever; and no one will snatch them out of My hand’ (John 10:28). So Scripture marks some sins as deadly and warns believers in earnest, while also promising that Christ keeps his own and forgives those who repent. It does not say in so many words that a single grave sin removes justification.

Step S13.3.2: Patristic evidence

Era II: Tertullian (On Modesty 19, written as a Montanist) reads 1 John as setting out ‘a distinction of sins’. There are ‘some sins of daily committal, to which we all are liable’, and for these ’there will be pardon’; but there are ’the graver and destructive ones’, such as ‘murder, idolatry, fraud, apostasy, blasphemy’, and of the one born of God he says he ‘will cease to be the son of God if he do incur them’. He treats these as beyond the church’s pardon. Era III: Cyprian (On the Lapsed) treats denying Christ in persecution as a deadly fall, yet says God ‘can mercifully pardon the repenting, the labouring, the beseeching sinner’. Augustine (Enchiridion 71) says ’the daily prayer of the believer makes satisfaction for those daily sins of a momentary and trivial kind’, and that this prayer ‘certainly takes away the very small sins of daily life’; graver sins call for repentance and the church’s discipline. Sources: tertullian-s13x-s1 · tertullian-s13x-s2 · cyprian-s13x-s1 · augustine-s13x-s2.

Step S13.3.3: Weighing decision

Reading A: the fathers distinguish daily, lighter sins, forgiven through prayer, from grave sins (such as murder, idolatry and adultery) that kill the life of grace and cut a person off until he repents. Reading B: no sin removes a true believer’s justification, though grave sin brings God’s displeasure and discipline. Reading A, with medium confidence, Era II–III. Tertullian, Cyprian and Augustine all draw the line between kinds of sin from 1 John 5:16–17, and treat grave sin as deadly to the believer. They differ on whether the church can restore such sinners (Tertullian no, Cyprian and Augustine yes). The later language of justifying grace is not theirs, and none gives a fixed list in Trent’s way. Verdict, in plain terms: the fathers taught that grave sins put a believer’s life with God at risk and must be repented of to be restored, while everyday sins are forgiven through daily prayer.

  • Confidence: Medium. The distinction is clear in Era II–III; the precise account of what is lost is later.

Step S13.3.4: Source-proximity weighing

  • Scripture (benchmark): 1 John 5:16–17 (sin leading to death and not leading to death); Gal 5:21; 1 Cor 6:9–11 (warnings to believers); Ps 51:11; 2 Sam 12:13 (David’s grave sin forgiven on repentance); John 10:28 (Christ keeps his sheep). Scripture holds the warnings and the promises together and does not settle exactly what grave sin does to a believer’s standing. (Scripture confidence: low-medium)
  • Assessment: The fathers here are Era II–III, so their weight is moderate to high, and they agree on the distinction between kinds of sin. Scripture, the primary measure, gives both real warnings and firm promises and does not settle the question directly, so Scripture scores are level at 3. The fathers’ scores carry the difference: traditions that teach that grave sin drives out grace or faith score higher on the fathers than those that hold that a believer can never lose the state of grace.

S13.3 by tradition

  • Catholic (fathers 4/4; Scripture 3/4): Trent VI ch. 15: ’the received grace of Justification is lost, not only by infidelity whereby even faith itself is lost, but also by any other mortal sin whatever, though faith be not lost’. Matches the fathers’ distinction; the claim that faith remains while grace is lost is later precision.
  • Orthodox (fathers 4/4; Scripture 3/4): Peter Mogila, Orthodox Confession III, Q. 17–18: ‘some sins be unto death, and some not unto death’, and mortal sin ’excludeth from the grace of God, and killeth him who fulfileth it in his works’. Matches the fathers’ reading of 1 John 5:16–17.
  • Oriental Orthodox (fathers n/a/4; Scripture n/a/4): Not assessed: no classic Oriental Orthodox text on this question located.
  • Lutheran (fathers 4/4; Scripture 3/4): Smalcald Articles III.3.43: when holy men ‘happen to fall into manifest sins, as David into adultery, murder, and blasphemy, that then faith and the Holy Ghost has departed from them’. Matches the fathers: grave sin drives out the life of grace, and repentance restores it.
  • Anglican (fathers 3/4; Scripture 3/4): Art. XVI: ‘After we have received the Holy Ghost, we may depart from grace given, and fall into sin, and by the grace of God we may arise again’; it speaks of ‘deadly sin willingly committed after Baptism’. Agrees with the fathers in outline but gives no account of which sins do this.
  • Presbyterian (fathers 2/4; Scripture 3/4): WCF XVII.1: those effectually called ‘can neither totally nor finally fall away from the state of grace’; XV.4: ‘As there is no sin so small, but it deserves damnation; so there is no sin so great, that it can bring damnation upon those who truly repent’. Keeps the need to repent of grave sin, but denies that it removes a believer’s state of grace, against the fathers’ distinction of deadly sins.
  • Reformed Baptist (fathers 2/4; Scripture 3/4): 1689 17.1 uses the same words as WCF XVII.1. Same assessment as Presbyterian.
  • General Baptist (fathers 2/4; Scripture 3/4): Orthodox Creed XXXVI: those effectually called ‘shall certainly persevere unto Eternal Life’. Same direction as Presbyterian.
  • Anabaptist (fathers n/a/4; Scripture n/a/4): Not assessed: Schleitheim and Dordrecht deal with grave sin through church discipline (the ban) but do not say whether it removes justification.