Senior Essay

I'm having a little trouble with my senior essay:

God rules the kingdom of heaven, and that is his realm. But he made everything, He rules everything, and so his realm extends to everything, even where his will is not obeyed. There is a paradox here, for we truly have free will, and yet our will cannot go against God’s will. Paradoxes are hard to think about, the mind constantly slides down and takes sides on the issue because of the non-contradiction principle. I guess the only way I can think of holding on to this thought is that God’s Will is that which cannot be contravened, and extends to his entire realm, but within his realm he created things which are able to make free choices. These choices are not subject to the Will of God, but can never cause an event to occur which God does not Will. That really just spreads the paradox out with the intent that you forget the first part by the time you read the second.

If anyone can help me out, please do :-)