I seem to be taking a very circuitous route (as you may have noticed) to the question of why we might think that the author of the Gospel of John had access to a written source that gave him his information about the “signs” that Jesus did during his public ministry.   To get to that point, I have been discussing how John’s view of Jesus’ spectacular deeds differed significantly from the view of the Synoptics.  I have stressed that whereas in John Jesus does signs in order to prove that he is the Son of God so that people would come to believe in him, in the Synoptics Jesus refuses to do signs in order to prove his divine identity.

But why then does he do miracles in the Synoptics?   I suppose the common answer is probably right: he does miracles out of compassion for those who are suffering.   But there is more to it than that.   The miracles in the Synoptics do demonstrate that what Jesus says is true.  But in these Gospels what he talks about is not his own divinity.  What he talks about is the coming kingdom of God.  And the miracles show that it is almost here – or in the latest of the three Gospels, Luke, that it has already started to manifest itself.

Here is what I say about the matter in a forthcoming publication:

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