The letter to the Christians of Antioch repeats the decisions of the Council of Jerusalem.
Anyway, Luke takes advantage of this opportunity to highlight the role of Paul and Barnabas in spreading the gospel among the Gentiles.
In turn, this fact highlights the power of the gospel.
We do not need to rely too much on our competence and preparation.
The gospel works by the power of the Holy Spirit that it reveals.
Those who believe in Jesus need to be attracted by him, in his own mysterious way.
At this point, human persuasion can be a hindrance and time will reveal this.