At least you proved my central argument: that "Christian" thought is diverse.
One: I don't accept your "definition". Saying "I define X to mean..." is not a proof; it's an axiom/presupposition, one which I don't share, as I mentioned. My "definition" of God is "the being described in the Old and New Testaments as the creator of the world." Pre-existence does not prove/require omnipotence. Being very, very powerful is not the same thing as omnipotence. And, to cap it all off, an omnipotent being who limits the exercise of its power is no longer an omnipotent being in the classic sense. So you have to decide whether "omnipotent" in any given sentence means:
1. All-powerful, no restraint,
2. All-powerful, some restraint, or
3. Less than all-powerful because of the restraint.
I usually choose 3, but that's just because most Westerners believe that Power isn't Power unless it's exercised; i.e. - they don't admit option 2.
Two: What was two again? Oh, yes. You're right, under option 2 above. But I read Grygus as invoking option 1, and reacted with 3.
And it's not lack of omnipotence that prevents knowing what to do; it's lack of omniscience. I should have made that distinction in my last post. In the OT and NT, I see a God who has limited himself by:
a) Creating a reasonably ordered universe.
b) Working in Time.
c) Giving Man Free Will. (love the all caps; gotta keep this Platonic ;)
d) Making covenants which He keeps.
Items (b) and (c) together have suggested to me for a while now that God has chosen to not see the future. One of these days I'm going to attempt to prove that, Biblically. You'll notice as a starting point that God's pronouncements about the future in the OT rarely (never? still looking) involve what shall come to pass passively; they are always pronouncements about what God will actively do in the future. Big difference. Yes, I know, the Book of Revelations is problematic--but it was a vision. Film at 11.