OK, so one of the qualities of God is that he is ineffable - at least to us humans and presumably not to himself...
But he is also all-powerful...
So wouldn't that mean that he is capable of explaining the mysteries of his true nature to we humans?
Which in a roundabout way would mean that he is not really necessarially ineffable?
Basically: could God ever tell us exactly how exactly he himself works? - For instance, how his mind works and how he interacts with his creation - indeed how exactly he made his creation, as in what mechanisms were employed? - could he ever tell us how exactly he went about making something out of nothing in such a way that we would actually understand?
Are humans capable of learning to understand how God works?
Your two points are interesting:
1. God ineffable: (too great to be put into words).
2. God all powerful (can do anything)...including put into words what He (God) is.
God can teach, but we would have to learn. Is God's power sufficient to teach us even if we are incapable of learning?
It seems almost impossible to prove the existence of God. The closest that we could come to proof is ESP. If a psychic could correctly predict the future, then we know that ESP works. It wouldn't be very hard to conclude that God is real if ESP works. It would mean that information has a way of organizing outside of a brain.
Is it possible that a lesser being could make a greater being? I think so. Humans can make computers that can do amazing calculations. So, at least in one way, humans made a device that is superior to themselves.
God seems to hide, but demand worship. God gave humans freedom of choice (do good or bad). But, humans wouldn't have freedom to disbelieve if God didn't hide. If God performed miracles for all to see, then everyone would have to believe in God. Unless, of course, there are some who just don't (or can't) see the miracles.
Revelation is a prediction that two Satanic demons from hell will defeat and corrupt Iraq as leaders of the most powerful nation in the world (According to Revelation 17:18). With eerie accuracy, Revelation came true in all of its details. So, the fulfillment of ancient prophecy is tantamount to proving that supernatural things can occur.
Since God is hiding, some people see God's miracles and don't recognize them. Some might not think that we are in the end times, but things are happening by coincidence.
Accepting Satan is a package deal. Satan wants to ruin all of God's wonderful achievements. So, pollution, Global Warming, offshore drilling, logging old growth forests, etc., is to be expected. That is, we don't have to expect just one bad thing, we must accept a lot of bad things from the same leader.