See Introd. to Luke. His connection with Paul appears first in Act 16:10. He remained at Philippi after Paul's departure, and was there seven years later, when Paul revisited the city (Act 20:5, Act 20:6). He accompanied Paul to Jerusalem (Act 21:15), after which we lose sight of him until he appears at Caesarea (Act 27:2), whence he accompanies Paul to Rome. He is mentioned Col 4:14 and Phm 1:24.
In N.T. mostly in Acts. See on Act 23:31, and comp. Act 20:13, Act 20:14.
Mentioned Col 4:10; Phm 1:24; 1Pe 5:13. Probably John Mark (Act 12:12, Act 12:25; Act 15:37), called the cousin of Barnabas (Col 4:10). The first mention of him since the separation from Paul (Act 15:39) occurs in Colossians and Philemon. He is commended to the church at Colossae. In 1st Peter he sends salutations to Asia. In both Colossians and Philemon his name appears along with that of Demas. In Colossians he is named shortly before Luke and along with Aristarchus who does not appear here. He (Mark) is about to come to Asia where 2nd Timothy finds him. The appearance in Colossians of Aristarchus with Mark and of Demas with Luke is probably the point of connection with the representation in 2nd Timothy.
Profitable for the ministry (εὔχρηστος εἰς διακονίαν)
Ἑύχρηστος profitable, only here, 2Ti 2:21, Phm 1:11. For for the ministry rend. for ministering or for service, and see on 1Ti 1:12.