John 21:7; John 21:20; John 21:24
The disciple whom Jesus loved said to Peter, "It's the Lord." When Simon Peter heard that it was the Lord, he put back on the clothes that he had taken off and jumped into the sea.
Peter turned around and saw the disciple whom Jesus loved. That disciple was following them. He was the one who leaned against Jesus' chest at the supper and asked, "Lord, who is going to betray you?"
This disciple was an eyewitness of these things and wrote them down. We know that what he says is true.