John 21:22-25 J.B. Phillips New Testament (PHILLIPS)
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.
John 21:22-24 New International Version (NIV)
22 Jesus answered, “If I want him to remain alive until I return, what is that to you? You must follow me.” 23 Because of this, the rumor spread among the believers that this disciple would not die. But Jesus did not say that he would not die; he only said, “If I want him to remain alive until I return, what is that to you?”
24 This is the disciple who testifies to these things and who wrote them down. We know that his testimony is true.