Galatians 2:3

2:3 Yet not even Titus, who was with me, was compelled to be circumcised, although he was a Greek.

Galatians 2:8

2:8 (for he who empowered Peter for his apostleship to the circumcised also empowered me for my apostleship to the Gentiles)

Galatians 2:11

Paul Rebukes Peter

2:11 But when Cephas came to Antioch, I opposed him to his face, because he had clearly done wrong.

Galatians 6:7

6:7 Do not be deceived. God will not be made a fool. For a person will reap what he sows,