JOHN MARK (13:4–5, 13) Acts 12:12, 25; 15:36–39 Col 4:10 2 Tim 4:11 Phlm 1:23–24 1 Pet 5:13 John Mark, writer of the earliest Gospel (the Gospel of Mark), was an assistant of three early missionaries—Barnabas, Paul, and Peter. Mark was taken along as an assistant by Barnabas and Paul on their first missionary journey. However, for unknown reasons, he left them to return to Jerusalem before the trip was completed (12:25; 13:4–5, 13). Because of this, when Barnabas wanted to take him along on the second