Read Acts 15:36–39. Why did Paul reject John Mark, and why did Barnabas give him a second chance?The reason for Paul’s rejection of the young man is given in Acts 15:38. Mark had withdrawn from them and had not continued in the work of ministry. Paul’s attitude is understandable, if blunt. Missionary life, particularly in the ancient world, was rough and demanding (compare with 2 Cor. 11:23–28). Paul depended on his fellow missionaries to help carry the burden of such challenging work and conditions. In his perspective, one who deserted so quickly did not deserve a place in a missionary team fighting hand to hand against evil forces.Barnabas disagreed. He saw potential in Mark and did not want to leave the young man behind. Such a deep dispute arose between Paul and Barnabas over John Mark that they parted ways. Paul chose Silas to go with him, and Barnabas took Mark.Acts does not explain why Barnabas chose to take Mark with him. In fact, this passage is the last place that the two men appear in Acts. But in­terestingly, it is not the last place Mark is mentioned in the New Testament.Read Colossians 4:10, 2 Timothy 4:11, Philemon 24, and 1 Peter 5:13. What details about Mark’s recovery do these verses suggest?An amazing transformation seems to have occurred in Mark. In these passages, Paul indicates the value of Mark to him and to ministry. Paul counts him as one of his fellow workers and wants Timothy to bring Mark with him. The book of 1 Peter indicates that Peter as well had a close relationship with Mark. These books by Paul and Peter were written likely in the early A.D. 60s, some 15–20 years after the experience in Acts 15. Mark clearly recovered from his failure, almost certainly through the trust that his cousin, Barnabas, placed in him.Consider a time when you or a friend failed and were given a second chance. How did that experience change you and those who helped you? How did it modify your ministry to others?