John 21:20-22

20Peter turned around and saw the disciple whom Jesus loved. That disciple was following them. He was the one who leaned against Jesus’ chest at the supper and asked, “Lord, who is going to betray you?”

21When Peter saw him, he asked Jesus, “Lord, what about him?”

22Jesus said to Peter, “If I want him to live until I come again, how does that concern you? Follow me!”