I admit that I am late coming to this discussion, and I am not yet passed page three!! So, maybe someone else has picked up on this post already.
I may be wrong, but you seem to be saying that what Jesus did not say, is not worth saying?
Yet John says- " 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 could not contain the books that should be written. "
The Lord is not limited.
After all, it was Jesus Himself who met Paul. on the road and knocked him off his donkey...and told him what He had called Paul for!! So Paul was being obedient to his calling!!
Jesus taught Paul the next step for the Church.
He called Paul to build on the foundation that He Himself had laid.
It was a 'moving on' from basic salvation..a maturing of the Church, no longer babes...but growing into mature sons. ( Rev 3)
Isa 28 9 "Whom shall he teach knowledge? and whom shall he make to understand doctrine? them that are weaned from the milk, and drawn from the breasts.
For precept must be upon precept, precept upon precept; line upon line, line upon line; here a little, and there a little...."
And Paul preach what Jesus told him to preach...in His name!!
The church would have been stunted without Paul.
We had a dear sweet old pastor when we were first saved.
Sadly the church was dying. Dying through lack of food. Every service was a salvation service , the gospel of salvation at every service.
Repetitious preaching which did not mature the church...preaching to the already saved.
"Till we all come in the unity of the faith, and of the knowledge of the Son of God, unto a perfect man, unto the measure of the stature of the fulness of Christ "
....H