It is through the grace of our Lord Jesus that we are saved

Acts 15:1-29
We believe it is through the grace of our Lord Jesus that we are saved, just as they are, Peter said.
You are to abstain from good sacrificed to idols, from blood, from the meat of strangled animals and from sexual immorality. You will do well to avoid these things.
Ten years or more have passed since the apostles approved the admission of Cornelius' Gentile household to the church, and opposition has hardened.
When reports of Paul's successes among the Gentiles reach the salvation-by-faith and circumcision-party, they see the red light and openly oppose his teaching.
On such a vital matter, an authoritative decision by the apostles and elders is essential to avoid a complete split. Peter's reminder of the earlier events, and the account given by Paul and Barnabas of God's work among the Gentiles, carry the day.
The final summing-up and verdict given by James, the Lord's brother and leader of the Jerusalem church, finds general acceptance.
The Gentiles are asked simply to accommodate the Jewish Christians by respecting Jewish food-laws, so that Jews and Gentiles can share the same table and the church meet together as one.
This chapter is a turning-point in Acts. The centre now shifts away from Jerusalem and the apostles, with the emphasis on the mission to the Gentiles, and the new churches.
Why?
Follow the laws of Moses can't be saved, but believe in Jesus Christ
Peter and James played their position well in church and make good decision with the truth of the Lord.
Abstain from good sacrificed to idols, from blood, from the meat of strangled animals and from sexual immorality. These four rules are available to all Christians today.
How?
We believe it is through the grace of our Lord Jesus that we are saved.