Grace is necessary for every good act

Doctrine · On salvation · from 418

The grace of God is necessary not only for knowing what is right but for doing it.

Carthage 418 against the Pelagian account of what the will can do unaided. Orange in 529 returned to it and closed the semi-Pelagian question the same way.

Held it

418 — The Council of Carthage (418) (Defines). Rules that grace is necessary for the doing of what is right and not only for knowing it. The Seven Ecumenical Councils (NPNF series 2 vol. 14) · the African Code, canon 113 (Carthage 418)
427 — Augustine of Hippo (Defends). Argues that the will itself is prepared by God, so that grace precedes every good act. New Advent (Fathers and Catholic Encyclopedia) · Augustine, On Grace and Free Will 33

In the disputes

The Pelagian controversy How much a man can do unaided.

First stated in this form after The Seven Ecumenical Councils (NPNF series 2 vol. 14) · the African Code, canon 113 (Carthage 418) on grace.