“But when I saw that they walked not uprightly according to the truth of the gospel, I said unto Peter before them all, If thou, being a Jew, livest after the manner of Gentiles, and not as do the Jews, why compellest thou the Gentiles to live as do the Jews?”
King James Version (KJV)
2:14 I said to Cephas before them all - See Paul single against Peter and all the Jews! If thou being a Jew, yet livest, in thy ordinary conversation, after the manner of the gentiles - Not observing the ceremonial law, which thou knowest to be now abolished. Why compellest thou the gentiles - By withdrawing thyself and all the ministers from them; either to judaize, to keep the ceremonial law, or to be excluded from church communion ?
Ga 2:14 But when I saw . . . I said unto Peter. It was time to act decisively. Antioch was a great center. It was important that no wrong influences go forth from that center. Hence Paul administered the stern rebuke to Peter which follows. Before [them] all. The rebuke was on a public occasion. If thou, being a Jew, livest after the manner of Gentiles. He had, right there in Antioch, lived with the Gentile Christians according to their customs (Ga 2:12). Why compellest thou the Gentiles to live as do the Jews? Now, he insisted, at least by his example, that the Gentile Christians should become Jews. He virtually refused to fellowship them.