Keep obey the truth of the Lord and praying for the church with pure heart

Acts 15:1-11
The apostles and elders met to consider this question; "The Gentiles must be circumcised and required to obey the law of Moses."
Paul and Barnabas went to Jerusalem to see the  apostles and elders about this question.
Peter got up and addressed them: "God, who knows the heart, showed that he accepted them by giving the Holy Spirit to them, just as he did to us. He made no distinction between us and them, for he purified their hearts by faith... We believe it is through the grace of our Lord Jesus that we are saved, just they are."
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 part, 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.
Why?
Obey the law or following the grace of our Lord may becomes question among us now. But let believe that through the grace of our Lord Jesus and believe that the Holy Spirit is our helper, there is nothing can dispute and quarrel among us.
Church may argue for the just and love or feel the Pastor is unfair. Our heard should be open and pure and obey the teaching from Jesus Christ.
How?
Argument may lead church more stronger among Christians, because all of us are not completed. We need keep following the truth of the Lord, and praying to bear this mission from the God.