Gálatas 2

Paul Opposes Peter

11 But when Peter came to Antioch, I opposed him to his face, because he was to be blamed. 12 For before certain men came from James, he would eat together with the Gentiles; but when they came, he began to draw back and began to separate himself, fearing those of the circumcision party. 13 And the rest of the Jews joined him in hypocrisy, so that even Barnabas was carried away with their hypocrisy.

Justification by Faith

14 But when I saw that they did not act rightly with respect to the truth of the gospel, I said to Peter before them all, "If you, being a Jew, live in Gentile fashion and not in Jewish fashion, why do you compel the Gentiles to live as Jews?"