Jerome — on Gal 2:21 (Commentary on Galatians)

“(Verse 21.) I do not reject the grace of God; for if justice is through the Law, then Christ died in vain. He rejects the grace of God, both the one who lives under the Law after the Gospel, and the one who becomes defiled by sins after baptism. But he who can say with the Apostle: His grace in me was not in vain (1 Cor. XV, 10), he also speaks confidently of this: I do not reject the grace of God. What follows, however, is very necessary against those who think that the precepts of the Law must be observed after the faith of Christ. For it must be said to them: If righteousness comes through the law, then Christ died for nothing. Or certainly they should teach how Christ did not die for nothing if works justify. But even though they may be dull, they will not dare to say that Christ died without cause. Therefore, in regard to the participle of the syllogism that is proposed here, that is: If righteousness comes through the law, then Christ died for nothing, we must accept what is consequentially inferred and cannot be denied: but Christ did not die for nothing; and conclude: Therefore, righteousness does not come through the law. So far he has been against Peter, but now he is turning towards the Galatians.”