151 And certain men came down from Judea and taught the brethren, "Unless you are circumcised according to the custom of Moses, you cannot be saved." 2 Therefore, when Paul and Barnabas had no small dissension and dispute with them, they determined that Paul and Barnabas and certain others of them should go up to Jerusalem, to the apostles and elders, about this question. 3 So, being sent on their way by the church, they passed through Phoenicia and Samaria, describing the conversion of the Gentiles; and they caused great joy to all the brethren. 4 And when they had come to Jerusalem, they were received by the church and the apostles and the elders; and they reported all things that God had done with them.
Matthew Henry's Commentary on Acts 15:1-4
Commentary on Acts 15:1-6
(Read Acts 15:1-6)
Some from Judea taught the Gentile converts at Antioch, that they could not be saved, unless they observed the whole ceremonial law as given by Moses; and thus they sought to destroy Christian liberty. There is a strange proneness in us to think that all do wrong who do not just as we do. Their doctrine was very discouraging. Wise and good men desire to avoid contests and disputes as far as they can; yet when false teachers oppose the main truths of the gospel, or bring in hurtful doctrines, we must not decline to oppose them.