John 21:20-22 NRSV
Peter turned and saw the disciple whom Jesus loved following them; he was the one who had reclined next to Jesus at the supper and had said, “Lord, who is it that is going to betray you?” When Peter saw him, he said to Jesus, “Lord, what about him?” Jesus said to him, “If it is my will that he remain until I come, what is that to you? Follow me!”
NRSV: New Revised Standard Version