John 21:20
King James Version
“Then Peter, turning about, seeth the disciple whom Jesus loved following; which also leaned on his breast at supper, and said, Lord, which is he that betrayeth thee?”
Context
17He saith unto him the third time, Simon, of Jonas, lovest thou me? Peter was grieved because he said unto him the third time, Lovest thou me? And he said unto him, Lord, thou knowest all things; thou knowest that I love thee. Jesus saith unto him, Feed my sheep.
18Verily, verily, I say unto thee, When thou wast young, thou girdedst thyself, and walkedst whither thou wouldest: but when thou shalt be old, thou shalt stretch forth thy hands, and another shall gird thee, and carry whither thou wouldest not.
19This spake he, signifying by what death he should glorify God. And when he had spoken this, he saith unto him, Follow me.
20Then Peter, turning about, seeth the disciple whom Jesus loved following; which also leaned on his breast at supper, and said, Lord, which is he that betrayeth thee?
21Peter seeing him saith to Jesus, Lord, and what this man
22Jesus saith unto him, If I will that he tarry till I come, what to thee? follow thou me.
23Then went this saying abroad among the brethren, that that disciple should not die: yet Jesus said not unto him, He shall not die; but, If I will that he tarry till I come, what to thee?