Contradiction with Acts 13:13
Acts 12:25 states that John, whose surname was Mark, returned with Barnabas and Saul, but Acts 13:13 mentions John departing from them, suggesting a contradiction in his commitment to the mission.
Acts 13:13: Now when Paul and his company loosed from Paphos, they came to Perga in Pamphylia: and John departing from them returned to Jerusalem.
Contradiction with Galatians 2:13
Acts 12:25 presents an image of harmonious collaboration, whereas Galatians 2:13 points to dissimulation among the leaders, indicating tension and inconsistency in their collective work.
Galatians 2:13: And the other Jews dissembled likewise with him; insomuch that Barnabas also was carried away with their dissimulation.
Contradiction with 2 Timothy 4:11
Acts 12:25 includes Mark in active mission work with Paul, while 2 Timothy 4:11 describes Mark as being brought back into service, indicating a previous departure or falling out.
2 Timothy 4:11: Only Luke is with me. Take Mark, and bring him with thee: for he is profitable to me for the ministry.