36Some time after this, Paul said to Barnabas, “Let us go back and visit the Lord's followers in every town in which we have told the Lord's message, and see how they are prospering.”
37Barnabas wished to take with them John, whose other name was Mark;
38but Paul felt that they ought not to take with them the man who had deserted them in Pamphylia, and had not gone on with them to their work.
Acts 15
Acts 15:36-38