Thing is though, the gospels were written long after the death of Jesus on the cross.
The apostles were not carry around an binder with all the things Jesus did and said.
It was their memories and Paul's revelations directly from God that became what
we call New Testament. Much of the Old Testament sprang from oral tradition which
was written down many years after much of it was already said.
John 21:25
King James Bible
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. Amen.
The intent of scripture is not to make us scholars but to give us the tools and steps
for our journey to God. It is not a book to analyse or intellectualise; it is written
for us to come ever closer to the heart of God.