35However, Paul and Barnabas continued to stay in Antioch. While they were there, they, along with many others, were teaching people and preaching to them the message about the Lord Jesus.
36After some time Paul said to Barnabas, “Let's go back and visit the fellow believers in every city where we previously proclaimed the message about the Lord Jesus. In that way, we will know how well they are continuing to believe in the Lord Jesus.”
37Barnabas agreed with Paul, and said that he wanted to take John, whose other name was Mark, along with them again.
Acts 15
Acts 15:35-37