Some scripture would be nice to back up, "God knows what you are going to do before you do it". All that I have found, and I look for them, have to do with a predestined plan that we can follow if we get right with God.
On Eph 2:5, it clearly states "when we were dead in sins", we had not sinned before we were born, for we are born into sin, so these verses talk about grace given to sinners. Later in verse 10, he speaks only of good works, which God prepared in advance for us to do. This still fits with a predestined plan for us, which we need to follow, or choose not to.
I would rather see someone on the everything known, predestined camp take some of these verses Michael has shown and speak to how they can fit into your way of thinking. Reconcile some of these scriptures please.
How about....
1 John 5:13 (ESV)
13 I write these things to you who believe in the name of the Son of God that you may know that you have eternal life.
1 Samuel 15:27 (ESV)
Samuel told Saul.................
"The Lord has taken the kingdom of Israel from you today and has given it... to one better than you".
It was over 20 years later, after many close calls, that David actually became king of all Israel.
Isaiah 46:9-11................
"Remember the former things, those of long ago. I am God and there is no other; I am God and there is none like me. I make known the end from the beginning, from ancient times, what is still to come. I say: My purpose will stand, and I will do all that I please. From the east I summon a bird of prey; from a far-off land, a man to fulfill my purpose. What I have said, that will I bring about; what I have planned, that will I do".
Isaiah 40:32.........
"He brings princes to naught and reduces the rulers of this world to nothing".
Jeremiah 1:10.......
"He tears down and destroys and builds up and plants nations and kingdoms".
Romans 13:1..........
"There is no authority except that which God has established".
Jeremiah 27............
God declares, "With my great power and outstretched arm I made the earth and its people and the animals that are on it, and I give it to anyone I please".
Deut. 32:39...........
God says, "There is no god besides me. I put to death and I bring to life, I have wounded and I will heal, and no one can deliver out of my hand".
Isaiah 45:7.............
"I am the Lord and there is no other. I form the light and create darkness, I bring prosperity and create disaster; I the Lord do all these things".