Acts 13:2

13:2 While they were serving the Lord and fasting, the Holy Spirit said, “Set apart for me Barnabas and Saul for the work to which I have called them.”

Acts 14:26

14:26 From there they sailed back to Antioch, where they had been commended to the grace of God for the work they had now completed.

Acts 15:38

15:38 but Paul insisted that they should not take along this one who had left them in Pamphylia and had not accompanied them in the work.