John 21:7

Therefore, the disciple whom Jesus loved said to Peter, "It is the Lord." Simon Peter, when he had heard that it was the Lord, wrapped his tunic around himself, (for he was naked) and he cast himself into the sea

Other versions

King James Version

Therefore that disciple whom Jesus loved saith unto Peter, It is the Lord. Now when Simon Peter heard that it was the Lord, he girt his fisher's coat unto him, (for he was naked,) and did cast himself into the sea.

English Standard Version

That disciple whom Jesus loved therefore said to Peter, "It is the Lord!" When Simon Peter heard that it was the Lord, he put on his outer garment, for he was stripped for work, and threw himself into the sea.

New International Version

Then the disciple whom Jesus loved said to Peter, "It is the Lord!" As soon as Simon Peter heard him say, "It is the Lord," he wrapped his outer garment around him (for he had taken it off) and jumped into the water.