As they were traveling through the cities, they were handing down the rulings that had been decided upon by the emissaries and elders in Jerusalem, for them to keep.
When Paul and Barnabas had a big argument and debate with them, the brothers appointed Paul and Barnabas with some others from among them to go up to Jerusalem to the emissaries and elders about this issue.
When they arrived in Jerusalem, they were welcomed by the community and the emissaries and the elders. They reported all that God had done in helping them.