Galatians 2:11-13

But when Cephas came to Antioch, I opposed him to his face because he stood condemned. For he regularly ate with the Gentiles before certain men came from James. However, when they came, he withdrew and separated himself, because he feared those from the circumcision party. Then the rest of the Jews joined his hypocrisy, so that even Barnabas was carried away by their hypocrisy.