John 21:22-25

Jesus said to him, “If I want him to stay alive until I come [again], what is that to you? You follow Me!” So this word went out among the brothers that this disciple (John) was not going to die; yet Jesus did not say to him that he was not going to die, but only, “If I want him to stay alive until I come [again], what is that to you?” This is the same disciple who is testifying to these things and has recorded them; and we know [without any doubt] that his testimony is true. And there are also many other things which Jesus did, which if they were recorded one by one, I suppose that even the world itself could not contain the books that would be written.