Moved here from notes/reasoning/christology.md in the tier migration. The per-question reasoning now lives on each doctrine’s reasoning page: F04.1 · S16.2.

Christology: reasoning steps

Verdicts: categories/christology.md. Method: conventions and proximity tiers. Scripture is the primary measure; fathers are weighed by tier (T1 to c. 150 = 1.0, T2 = 0.8, T3 = 0.6, T4 = 0.4).

Post-750 development by tradition

Catholic

Constantinople III (681) and II Nicaea.

• X1 (fathers 4/4; Scripture 4/4): Chalcedon received.
• X2 (fathers 4/4; Scripture 4/4): Constantinople III received.

Orthodox

Maximus the Confessor; Constantinople III.

• X1 (fathers 4/4; Scripture 4/4): Chalcedon received.
• X2 (fathers 4/4; Scripture 4/4): Constantinople III received.

Oriental Orthodox

Severus; Nerses Shnorhali’s ‘one nature’ explained as union without mixture.

• X1 (fathers 4/4; Scripture 4/4): Severus: ‘one nature of God the Word incarnate’ (verified); full deity and humanity confessed, Chalcedon rejected.
• X2 (fathers 2/4; Scripture 2/4): Severus rejects Leo’s two operations (verified); one theandric will and operation.

Lutheran

Formula of Concord VIII (communication of attributes).

• X1 (fathers 4/4; Scripture 4/4): AC III; Formula of Concord VIII.
• X2 (fathers 3/4; Scripture 4/4): Two natures with their properties (FC VIII); wills not addressed explicitly.

Anglican

Art. II.

• X1 (fathers 4/4; Scripture 4/4): Art. II: ’two whole and perfect Natures … joined together in one Person’.
• X2 (fathers 3/4; Scripture 4/4): Art. II two natures; wills implicit.

Presbyterian

WCF VIII.

• X1 (fathers 4/4; Scripture 4/4): WCF VIII.2.
• X2 (fathers 3/4; Scripture 4/4): WCF VIII.2 ’two whole, perfect, and distinct natures’; wills implicit.

Reformed Baptist

1689 ch. 8.

• X1 (fathers 4/4; Scripture 4/4): 1689 8.2.
• X2 (fathers 3/4; Scripture 4/4): 1689 8.2; wills implicit.

General Baptist

Orthodox Creed (to verify).

• X1 (fathers 4/4; Scripture 4/4): Orthodox Creed (Christ’s two natures; to verify article).
• X2 (fathers 3/4; Scripture 4/4): Wills implicit; to verify.

Anabaptist

Menno Simons; Dordrecht IV.

• X1 (fathers 3/4; Scripture 3/4): Menno Simons, True Confession … of the Incarnation: Christ ’the Lord from heaven … generated and nourished in Mary’ (‘in’, not ‘of’, Mary: the celestial-flesh position), yet ’truly flesh and blood … like unto us in all things, yet without sin’ (verified).
• X2 (fathers n/a/4; Scripture n/a/4): Not addressed.