OK, since I am obviously not getting what you mean by "revelation", would you give an example or two of what this is?
Maybe that will help.
Look at the difference between how God revealed Himself to the Abraham and the Children of Israel and now different He was from the gods of the ancient pagans.
He was radically different, the polar opposite of gods concocted by pagans. The biblical concept of a loving and redemptive God, was foreign to that part of the world. Having a God who was ompotent, omniscient, omnipresent, a God who was fully self-sufficient, needing no human assistance, a righteous God who was not fickle, who could be trusted to be faithful to everything He says and promises, and who is not sexually immoral like human beings; a holy God who is not plagued with the same moral failings as human beings, was a "revelation" to the ancient world. No such God ever entered their minds. They had no point of reference for such a God.
That is why the Scripture says that there is no god like YHVH.
Jesus was the revelation of who God is.
No one has ever seen God; the only God, who is at the Father's side, he has made him known.(Joh 1:18)
John 14:9 and Hebrews 1:1 also confirm that Jesus is the revelation of God and Hebrews 1:1 tells us that Jesus is the final revelation of God. God has in these last days spoken to us through His Son. Jesus is God's final word to mankind. That is why we believe that the canon is closed. Jesus has accomplished what God intended in terms of revealing Him to mankind and providing a means for redemption.
Again, I think you are applying a subjective sense to "revelation" and in doing so, are confusing it with illumination. Revelation is corporate. It is God revealing Himself to mankind. Illumination is more local and personal. It is God giving more light on what has already been revealed. Unfortunately, many people call that "revelation," and it isn't.