Certain people came down from Judea to Antioch and were teaching the believers: “Unless you are circumcised, according to the custom taught by Moses, you cannot be saved.” This brought Paul and Barnabas into sharp dispute and debate with them. So Paul and Barnabas were appointed, along with some other believers, to go up to Jerusalem to see the apostles and elders about this question. The church sent them on their way, and as they traveled through Phoenicia and Samaria, they told how the Gentiles had been converted. This news made all the believers very glad. When they came to Jerusalem, they were welcomed by the church and the apostles and elders, to whom they reported everything God had done through them.
Then some of the believers who belonged to the party of the Pharisees stood up and said, “The Gentiles must be circumcised and required to keep the law of Moses.”
This is where one of the great controversies of the first century began; certain Jewish believers started teaching that Gentiles must be circumcised before they could receive God’s grace, for after all; God’s grace was really intended just for the Jews… right?