Paul's clear understanding of what put a person right with God, led him to challenge Peter when the apostle visited Antioch later. There is no reference in Acts to this incident. Peter came to Antioch and ate with the uncircumcised Gentile Christians. We may take the reference to eating with them to refer to sharing in the 'love feast' and the Lord's Supper. But when some Jewish Christians arrived from Jerusalem, Peter did not have the courage of his convictions which he had expressed in Jerusalem to Paul. Peter's hesitation about whether, after all, it was right to have fellowship with those who did not follow the Law, affected other Jewish Christians including Barnabas. Peter, as one of the great leaders of the Church, knew that his example would be noticed throughout the whole Church, and he was obviously uncertain in his own mind about the rightness of putting aside the claims of the Jewish Law. In spite of the agreement between the apostles about the Gentiles and the Law, there was likely to be disagreement over the issue amongst some members of the Jerusalem church. Acts 15:5 says that some believers who had been Pharisees tried to insist that the Gentiles must follow the Law. It seems clear that Peter feared a split in the Jerusalem church between Christians who supported the decision of the apostles and those who did not. In the end, such a split had to be faced. Paul uses strong language about Peter's compromising behaviour (Galatians 2:13), but Paul was right in refusing to accept compromise.