From Paphos, Paul and his companions sailed to Perga in Pamphylia, where John left them to return to Jerusalem. -- Acts 13:13

John Mark, the author of the book of Mark, left Paul to return home. It is often speculated that he may have been the one who fled the Garden so quickly, that he flew out of his clothes! Still, even after quitting several times, he learned to find the finish line anyways -- through persistence and faith. Enough, even, to earn the respect and love of Paul later on. Can we do no less?