Galatians 2:11-13 NLT

11 But when Peter came to Antioch, I had to oppose him to his face, for what he did was very wrong.
12 When he first arrived, he ate with the Gentile believers, who were not circumcised. But afterward, when some friends of James came, Peter wouldn’t eat with the Gentiles anymore. He was afraid of criticism from these people who insisted on the necessity of circumcision.
13 As a result, other Jewish believers followed Peter’s hypocrisy, and even Barnabas was led astray by their hypocrisy.