John 21:19-22

19(This he said to show by what kind of death he was to glorify God.) And after saying this he said to him, “Follow me.” 20Peter turned and saw the disciple whom Jesus loved following them, the one who also had leaned back against him during the supper and had said, “Lord, who is it that is going to betray you?” 21When Peter saw him, he said to Jesus, “Lord, what about this man?” 22Jesus said to him, “If it is my will that he remain until I come, what is that to you? You follow me!”