Galatians 2:11-13 New Revised Standard Version (NRSV)
Paul Rebukes Peter at Antioch
11 But when Cephas came to Antioch, I opposed him to his face, because he stood self-condemned; 12 for until certain people came from James, he used to eat with the Gentiles. But after they came, he drew back and kept himself separate for fear of the circumcision faction. 13 And the other Jews joined him in this hypocrisy, so that even Barnabas was led astray by their hypocrisy.