Acts 15:33-37

After they had spent time there, they were sent away from the brothers and sisters in peace to those who had sent them out.

But Paul and Barnabas stayed in Antioch, teaching and preaching the word of the Lord, with many others also. Second Missionary Journey

After some days Paul said to Barnabas, “Let’s return and visit the brothers and sisters in every city in which we proclaimed the word of the Lord, and see how they are.”

Barnabas wanted to take John, called Mark, along with them also.