John 21:20-23 - Peter And The Other Disciple Jesus Loved
20 Then Peter, turning round, saw the disciple who was dear to Jesus coming after them--the disciple who was resting on his breast at the last meal, and said, Lord, who is it who will be false to you? 21 Seeing him, Peter said to Jesus, What about this man?
22 Jesus said to him, If it is my desire for him to be here till I come back, what is that to you? come yourself after me.
23 So this saying went about among the brothers that this disciple would not undergo death: Jesus, however, did not say that he would not undergo death, but, If it is my desire for him to be here till I come back, what is that to you?