Galatians 2:11-13

11But when Peter came to Antioch, I opposed him to his face, because he was clearly in the wrong—

12for before certain people came from Jacob, he regularly ate with the Gentiles; but when they came, he began to withdraw and separate himself, fearing those from the circumcision.

13And the rest of the Jews joined him in hypocrisy, so that even Barnabas was carried away with their hypocrisy.