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S21 reasoning: Divine simplicity and impassibility

Reasoning steps: Divine simplicity and impassibility

Verdicts: S21 · Divine simplicity and impassibility. Method: conventions, scoring and proximity eras. Scripture is the primary measure; fathers are weighed by era (Era I to c. 150 = 1.0, II = 0.8, III = 0.6, IV = 0.4).

S21.1: Divine simplicity: is God without parts or composition?

Step S21.1.1: Scripture

‘I AM WHO I AM’ (Exod 3:14); ‘God is spirit’ (John 4:24); ‘I the LORD do not change’ (Mal 3:6); with God ’there is no variation or shadow due to change’ (Jas 1:17). No text states simplicity; it is inferred from God’s aseity, unity and unchangeableness.

Step S21.1.2: Patristic evidence

Irenaeus (Era II): God is ‘a simple, uncompounded Being, without diverse members’. Augustine (Era III): the divine nature ‘is simple, because it is what it has’, except for the relations of the persons. Sources: irenaeus-s21-s1 · augustine-s21-s1.

Step S21.1.3: Weighing decision

Era II states simplicity explicitly against Gnostic emanations; Era III makes it a rule of Trinitarian grammar. The later Eastern essence–energies distinction (1351) claims to keep it, saying the distinction brings no ‘synthesis’ into God. Verdict: simplicity (God has no parts) is patristic consensus from Era II; Scripture supports it by inference, not statement.

  • Confidence: High.

Step S21.1.4: Source-proximity weighing

  • Scripture (benchmark): Inferred from aseity, unity and immutability (Exod 3:14; Mal 3:6; Jas 1:17); not stated. (Scripture confidence: medium)
  • Assessment: Era II and III agree; Scripture is consistent with simplicity but does not define it, so traditions that affirm it gain on the fathers and match Scripture’s implications without exceeding them.

S21.2: Divine impassibility: does the divine nature suffer?

Step S21.2.1: Scripture

‘God is not a man … that he should change his mind’ (Num 23:19; 1 Sam 15:29, in the same chapter as 15:11, ‘I regret’); ‘I the LORD do not change’ (Mal 3:6); yet ‘my compassion grows warm’ (Hos 11:8). Christ ‘suffered in the flesh’ (1 Pet 4:1). Read in context, the emotive texts are real but are set beside explicit denials that God changes like a man.

Step S21.2.2: Patristic evidence

Ignatius (Era I): Christ is ‘God existing in flesh … first passible and then impassible’. Cyril, read at Ephesus (Era III): the Word is ‘impassible, yet in his Crucified Body he made his own the sufferings of his own flesh’. Sources: ignatius-s21-s1 · ephesus-s21-s1.

Step S21.2.3: Weighing decision

Era I already pairs the impassible God with the suffering Christ; Era III fixes it: the Son suffered in the flesh, not in the divine nature. Verdict: the divine nature is impassible and the Son suffered in his flesh: consensus from Era I to III.

  • Confidence: High.

Step S21.2.4: Source-proximity weighing

  • Scripture (benchmark): God does not change like a man (Num 23:19; 1 Sam 15:29; Mal 3:6); Christ suffered ‘in the flesh’ (1 Pet 4:1); the emotive language is read with these. (Scripture confidence: medium)
  • Assessment: Era I–III and Scripture agree on the core; the debate is over how to read the emotive texts, which the fathers took as accommodated speech.

Post-750 development by tradition

Catholic

Lateran IV (1215).

  • S21.1 (fathers 4/4; Scripture 3/4): Lateran IV (1215): ’three persons but one absolutely simple essence, substance or nature’ (verified).
  • S21.2 (fathers 4/4; Scripture 3/4): Lateran IV: God ‘almighty, unchangeable’ (verified); Ephesus received.

Orthodox

Palamas and the Synodal Tome of 1351: essence and energies distinguished without composition.

  • S21.1 (fathers 3/4; Scripture 3/4): Synodal Tome of Constantinople (1351) §32: the distinction of divine essence and energy does not mean ’that there is any synthesis in God’ (verified, maximologia.org English translation); the distinction itself is a post-750 development.
  • S21.2 (fathers 4/4; Scripture 3/4): Receives Ephesus and Cyril’s Third Letter: the Word ‘impassible, yet … made his own the sufferings of his own flesh’ (Ephesus text verified).

Oriental Orthodox

Cyrillian Christology: the impassible Word suffered in the flesh.

  • S21.1 (fathers n/a/4; Scripture n/a/4): Not assessed: no Oriental Orthodox text on simplicity was checked.
  • S21.2 (fathers 4/4; Scripture 3/4): Receives Cyril’s Third Letter and Ephesus (431), the council the Oriental Orthodox accept (Ephesus text verified; reception is the standard Oriental Orthodox position, not separately cited).

Lutheran

AC I; FC SD VIII.

  • S21.1 (fathers 4/4; Scripture 3/4): AC I: God is ‘without body, without parts, of infinite power’ (verified).
  • S21.2 (fathers 4/4; Scripture 3/4): FC Solid Declaration VIII: ’the Son of God Himself truly suffered, however, according to the assumed human nature … although the divine nature can neither suffer nor die’ (verified).

Anglican

Art. I.

  • S21.1 (fathers 4/4; Scripture 3/4): Art. I: ‘without body, parts, or passions’ (verified).
  • S21.2 (fathers 4/4; Scripture 3/4): Art. I: ‘without body, parts, or passions’ (verified).

Presbyterian

WCF II.1.

  • S21.1 (fathers 4/4; Scripture 3/4): WCF II.1: ‘without body, parts, or passions’ (verified).
  • S21.2 (fathers 4/4; Scripture 3/4): WCF II.1: ‘without body, parts, or passions’ (verified).

Reformed Baptist

1689 2.1.

  • S21.1 (fathers 4/4; Scripture 3/4): 1689 2.1: ‘without body, parts, or passions’ (verified).
  • S21.2 (fathers 4/4; Scripture 3/4): 1689 2.1: ‘without body, parts, or passions’ (verified).

General Baptist

Orthodox Creed (1679) art. I.

  • S21.1 (fathers 4/4; Scripture 3/4): Orthodox Creed (1679) art. I: God is ‘without Matter or Form, Body, Parts, or Passions’ (verified, reformedontheweb.com transcription).
  • S21.2 (fathers 4/4; Scripture 3/4): Orthodox Creed (1679) art. I: ‘without … Body, Parts, or Passions’ (verified, reformedontheweb.com transcription).

Anabaptist

Dordrecht I.

  • S21.1 (fathers n/a/4; Scripture n/a/4): Not addressed: Dordrecht I confesses ‘one eternal, almighty, and incomprehensible God’ without a statement on simplicity (verified).
  • S21.2 (fathers n/a/4; Scripture n/a/4): Not addressed in Dordrecht (verified by reading art. I).