As they went from town to town, they delivered the decisions handed down by the apostles and elders in Jerusalem for the people to obey.

Acts 11:30
This they did, sending their gifts to the elders with Barnabas and Saul.

Acts 15:2
And after engaging these men in sharp debate, Paul and Barnabas were appointed, along with some other believers, to go up to Jerusalem to see the apostles and elders about this question.

Acts 15:4
On their arrival in Jerusalem, they were welcomed by the church and apostles and elders, to whom they reported all that God had done through them.

Acts 15:6
So the apostles and elders met to look into this matter.

Acts 15:28
It seemed good to the Holy Spirit and to us not to burden you with anything beyond these essential requirements:

And as they went through the cities, they delivered them the decrees for to keep, that were ordained of the apostles and elders which were at Jerusalem.