A man on Facebook recently said to me that “we do not know who wrote the Gospel of John.” I didn't ask him who “we” were. I figured he meant that nobody knows.
His point was that if we can't confirm the historical accuracy of the writing, since we don't even know who the author was, then we can't confirm the words in it attributed to Christ.
I was showing from the Gospel of John that Jesus said things that were in agreement with the Apostle Paul.
There are these claims out there that the Apostle Paul and Jesus are not in agreement.
There is the claim that Jesus and Paul differed on what the terms of salvation/ eternal life are.
I showed that both Jesus (from the Gospel of John) and Paul said that eternal life is through faith in Jesus Christ.
But that got shot down because “we don't know who wrote the Gospel of John”--so the man claimed.
I said to him that we know that the Gospel of John was written by the disciple who leaned on Jesus' breast during the last Passover the disciples had with Jesus right before His crucifixion.
The man said that that was not true.
So I quoted the Gospel of John to him:
“20 Then Peter, turning around,
saw the disciple whom Jesus loved following,
who also had leaned on His breast at the supper,
and said, "Lord, who is the one who betrays You?"
21 Peter, seeing him, said to Jesus, 'But Lord, what about this man?'
22 Jesus said to him, 'If I will that he remain till I come, what is that to you? You follow Me.'
23 Then this saying went out among the brethren that this disciple would not die. Yet Jesus did not say to him that he would not die, but, 'If I will that he remain till I come, what is that to you?'
24 This is the disciple who testifies of these things, and wrote these things; and we know that his testimony is true.”
John 21:20-24
I did not hear again from that man.
It is interesting that one of the oldest manuscript fragments of the New Testament is of the Gospel of John, dating to the early 2nd Century, possibly even AD 100. It was found in Egypt. The Apostle is believed to have lived into his 90's, dying of old age and not martyrdom like the other Apostles.



