How did Mark come to write one of the gospels if he wasn’t one of the original disciples?

Today Bible Study:

How did Mark come to write one of the gospels if he wasn’t one of the original disciples?

Although Mark was not one of the original apostles of Jesus, he was involved in many of the events recorded in the New Testament. He traveled as a close companion of the apostle Peter and appears repeatedly throughout the Book of Acts, where he is known as “John whose surname was Mark” (Acts 12:12, 25; 15:37, 39). When Peter was miraculously freed from prison, his first action was to go to Mark’s mother’s home in Jerusalem (Acts 12:12).

John Mark was also a cousin of Barnabas (Col. 4:10), and he joined Paul and Barnabas on their first missionary journey (Acts 12:25; 13:5). But Mark deserted the mission team while in Perga and returned to Jerusalem (Acts 13:13). Later, when Barnabas wanted to give Mark another opportunity to travel with Paul’s second missionary team, Paul refused. The resulting friction between Paul and Barnabas led to their separation (Acts 15:38-40).

Eventually, Mark’s youthful vacillation gave way to great strength and maturity. In time, he proved himself even to the apostle Paul. When Paul wrote to the Colossians, he told them that if John Mark came, they were to welcome him (Col. 4:10). Paul even listed Mark as a fellow worker (Philem. 24). Later, Paul told Timothy, “Get Mark and bring him with you, for he is useful to me for ministry” (2 Tim. 4:11).

John Mark’s restoration to useful ministry and preparation for writing his Gospel was due, in part, to his extended close relationship with Peter (1 Pet. 5:13). The older apostle was no stranger to failure, and his influence on the younger man was no doubt instrumental. Mark grew out of the instability of his youth and into the strength and maturity he would need for the work to which God had called him. Mark’s Gospel represents primarily Peter's version of the life of Jesus.