John 21:20-23 - Peter And The Other Disciple Jesus Loved
20 But Peter, having turned around, sees the disciple whom Jesus loves, following, who also leaned near his chest at the supper, and said, Lord, who is the man betraying thee? 21 Having seen this man, Peter says to Jesus, Lord, and what of this man?
22 Jesus says to him, If I want him to remain until I come, what is it to thee? Follow thou me.
23 This saying therefore went forth among the brothers, that that disciple does not die. And yet Jesus did not say to him, that he does not die, but, If I want him to remain until I come, what is it to thee?