Who now rejoice in my sufferings for you, and fill up that which is behind of the afflictions of Christ in my flesh for his body's sake, which is the church:
All Commentaries on Colossians 1:24 Go To Colossians 1
Augustine of Hippo
AD 430
And when as a preacher of Christ he was now suffering from others what he had done himself as a persecutor, “that I may fill up,” he said, “in my flesh what is lacking from the afflictions of Christ”; thus showing that what he was suffering was part and parcel of the afflictions of Christ. That can’t be understood of the head, which now in heaven is not suffering any such thing; but of the body, that is, the church; the body, which with its head is the one Christ.