I think He HAS already revealed the Mystery to us. It was given as a series of revelations from the risen Christ to Paul, the person chosen by Christ to reveal the Church the BOdy of Christ and this dispensation of Grace that we now live in. Remember, Paul said he was given revelations (plural) and that we were to follow him as he followed Christ. All that we need to know about this age of the grace of God and reconciliation to Him have been divulged. IMHO. We’re just awaiting the final member of the Body to be saved and brought into the Body. Then we’re gone. And it’s off to the tribulation for the unbelievers. That’s what Romans through Philemon teaches us. BTW: nowhere else in the Bible talks about this time of the grace of God. Why? Because it was a mystery, a secret, hid in God since the foundation of the world, until revealed to Paul. See how succinctly and perfectly His Word fits?!
The more I learn the more awestruck and thankful and humbled I am.
No, only a very small portion to date. There are numerous scriptures that explain this fact. I'll give you just this one to consider, since I'm in that book now. ;)
Rev. 10:4 And when the seven thunders had uttered their voices, I was about to write: and I heard a voice from heaven saying unto me, Seal up those things which the seven thunders uttered, and write them not.