Paul and Barnabas reported to the believers at Syrian Antioch.

Acts 14:24-28

24 After Paul and Barnabas had traveled through Pisidia district, they went south to Pamphylia district. 25 In that district, they arrived at Perga and preached God’s message about the Lord Jesus to the people there. Then they went down to the seacoast at Attalia. 26 There they got on a ship and went back to Antioch in Syria province. That was the place where Paul and Barnabas had been appointed {where believers had sent Paul and Barnabas} to go to other places and preach. Antioch was the place where the believers had asked God to kindly help Paul and Barnabas in the work that they had now completed. 27 When they arrived in Antioch, they called the believers together. Then Paul and Barnabas told them all that God had helped them to do. Specifically, they told them how God had enabled [IDM] many non-Jewish people to believe in Jesus. 28 Then Paul and Barnabas stayed in Antioch with the other believers for several months.