Galatians 2:11

11 But when Cephas came to Antioch, I opposed him to his face, because he stood self-condemned;

Galatians 2:11 In-Context

9 and when James and Cephas and John, who were acknowledged pillars, recognized the grace that had been given to me, they gave to Barnabas and me the right hand of fellowship, agreeing that we should go to the Gentiles and they to the circumcised.
10 They asked only one thing, that we remember the poor, which was actually what I was eager to do.
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.
New Revised Standard Version Bible, copyright 1989, Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved.