Galatians 2:12-14

12for before certain men came from James, he would eat with the Gentiles; but when they came, he withdrew and separated himself, fearing those who were of the circumcision.

13And the rest of the Jews also played the hypocrite with him, so that even Barnabas was carried away with their hypocrisy.

14But when I saw that they were not straightforward about the truth of the gospel, I said to Peter before them all, “If you, being a Jew, live in the manner of Gentiles and not as the Jews, why do you compel Gentiles to live as Jews?