But when I saw that they walked not uprightly according to the truth of the gospel, I said unto Peter before them all, If you, being a Jew, live after the manner of Gentiles, and not as do the Jews, why compel you the Gentiles to live as do the Jews?
All Commentaries on Galatians 2:14 Go To Galatians 2
Augustine of Hippo
AD 430
Those who wish to defend Peter from error and from the depravity of life into which he had fallen overturn the very way of religion in which lies the salvation of all. This shatters and diminishes the authority of the Scriptures. They do not see that in this defense they are implicitly charging the apostle Paul not only with the crime of lying but even with perjury in the very teaching of piety, that is, in the letter in which Paul proclaims the gospel. It is for this reason he says, before narrating these things [in :], “What I write to you, understand before God that I do not lie.