²² “If it is my wish,” returned Jesus, “for him to stay until I come, is that your business, Peter? You must follow me.”

²³ This gave rise to the saying among the brothers that this disciple would not die. Yet, of course, Jesus did not say, “He will not die,”, but simply, “If it is my wish for him to stay until I come, is that your business?”

All the above was written by an eye-witness

^24-25 Now it is this same disciple who is hereby giving his testimony to these things and has written them down. We know that his witness is reliable. Of course, there are many other things which Jesus did, and I suppose that if each one were written down in detail, there would not be room in the whole world for all the books that would have to be written.