Galatians 2:11-12

When Peter came to Antioch, he did something that was not right. I stood against him, because he was wrong. This is what happened: When Peter first came to Antioch, he ate and associated with the non-Jewish people. But when some Jewish men came from James, Peter separated himself from the non-Jews. He stopped eating with them, because he was afraid of the Jews who believe that all non-Jewish people must be circumcised.