20 Peter turned around and saw that the disciple whom Jesus loved dearly was following him. This is the disciple who bowed down to Jesus at supper and said, “Lord, who will betray you?”
John 21:20

21 When Peter saw the disciple following him, he asked Jesus, “Lord, what do you think about this? What will happen to it? ”
John 21:21

22 Jesus answered, “If I want him to live until I come, what is that to you? You follow me. ”
John 21:22

23 And the fame hereof went abroad into all that land. They were saying that this disciple whom Jesus loved so much would not die. But Jesus did not say that he would not die. It actually said, “If I want to live until I come, what about you?”
John 21:23