Galatians 2:3-5

2:3 Yet not even Titus, who was with me, was compelled to be circumcised, although he was a Greek. 2:4 Now this matter arose because of the false brothers with false pretenses who slipped in unnoticed to spy on our freedom that we have in Christ Jesus, to make us slaves. 2:5 But we did not surrender to them even for a moment, in order that the truth of the gospel would remain with you.

Galatians 2:11-12

Paul Rebukes Peter

2:11 But when Cephas came to Antioch, I opposed him to his face, because he had clearly done wrong. 2:12 Until certain people came from James, he had been eating with the Gentiles. But when they arrived, he stopped doing this and separated himself because he was afraid of those who were pro-circumcision.