John 21:20-23 - Peter And The Other Disciple Jesus Loved
20 Peter turned round and noticed the disciple whom Jesus loved following--the one who at the supper had leaned back on His breast and had asked, "Master, who is it that is betraying you?" 21 On seeing him, Peter asked Jesus, "And, Master, what about him?"
22 "If I desire him to remain till I come," replied Jesus, "what concern is that of yours? You, yourself, must follow me."
23 Hence the report spread among the brethren that that disciple would never die. Yet Jesus did not say, "He is not to die," but, "If I desire him to remain till I come, what concern is that of yours?"