In this study of Acts chapter 15, certain men from Judea teach that Gentiles must be circumcised after the manner of Moses to be saved, leading to strong dissension from Paul and Barnabas. They travel to Jerusalem to consult the apostles and elders, where Peter notes that Gentiles received the Holy Ghost by faith, just as the Jews, without the yoke of the law. James agrees, citing prophets, and decides not to trouble Gentile believers beyond abstaining from pollutions of idols, fornication, things strangled, and blood. A letter is sent to churches in Antioch, Syria, and Cilicia via Judas surnamed Barsabas and Silas. Paul and Barnabas later disagree over taking John Mark, who had departed from them in Pamphylia, and part ways: Barnabas sails to Cyprus with Mark, while Paul travels through Syria and Cilicia with Silas to confirm the churches. References include Galatians chapters 2 and 3 on justification by faith, not works.