Peter, turning about, seeth the disciple whom Jesus loved following; who also leaned back on his breast at the supper, and said, Lord, who is he that betrayeth thee? Peter therefore seeing him saith to Jesus, Lord, and what shall this man do? Jesus saith unto him, If I will that he tarry till I come, what is that to thee? Follow thou me. This saying therefore went forth among the brethren, that that disciple should not die: yet Jesus said not unto him, that he should not die; but, If I will that he tarry till I come, what is that to thee? This is the disciple that beareth witness of these things, and wrote these things: and we know that his witness is true. And there are also many other things which Jesus did, the which if they should be written every one, I suppose that even the world itself would not contain the books that should be written.
Jesus told him, "I am the way, the truth, and the life. No one can come to the Father except through me." (John 14:6)