Charles Spurgeon Commentary Galatians 2:11-14

"But when Cephas came to Antioch, I resisted him to the face, because he stood condemned. For before that certain came from James, he ate with the Gentiles; but when they came, he drew back and separated himself, fearing them that were of the circumcision. And the rest of the Jews dissembled likewise with him; insomuch that even Barnabas was carried away with their dissimulation. But when I saw that they walked not uprightly according to the truth of the gospel, I said unto Cephas before [them] all, If thou, being a Jew, livest as do the Gentiles, and not as do the Jews, how compellest thou the Gentiles to live as do the Jews?" — Galatians 2:11-14 (ASV)

It must have been very painful for Paul to come into conflict with Peter, whom he greatly esteemed; yet, for the truth's sake, he showed no partiality, and he had to withstand even a beloved brother when he saw that he was likely to pervert the simplicity of the gospel and rob the Gentiles of their Christian liberty. For this, we ought to be very grateful to our gracious God who raised up this brave champion, this beloved apostle of the Gentiles.