Because the Judaizers had told believers in the Galatian churches that Paul was not a true apostle, the incident mentioned in this verse is especially significant. Paul not only was equal to the other apostles but had on this occasion even reprimanded Peter (Cephas), the one who was recognizably the leading apostle among the Twelve. Both Peter and Paul had experienced salvation by grace through faith, both were directly chosen by the resurrected Jesus Christ to be apostles, and both had been mightily used by the Holy Spirit in establishing and teaching the church. The book of Acts can be divided between the early church ministry that centered on Peter (1â12) and that which centered on Paul (13â28). But in Antioch these two men of God came into head-on collision. . . .