Galatians 1:18

1:18 Then after three years I went up to Jerusalem to visit Cephas and get information from him, and I stayed with him fifteen days.

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 2:9

2:9 and when James, Cephas, and John, who had a reputation as pillars, recognized the grace that had been given to me, they gave to Barnabas and me the right hand of fellowship, agreeing that we would go to the Gentiles and they to the circumcised.

Galatians 2:14

2:14 But when I saw that they were not behaving consistently with the truth of the gospel, I said to Cephas in front of them all, “If you, although you are a Jew, live like a Gentile and not like a Jew, how can you try to force the Gentiles to live like Jews?”