If God knows I will not eat today (not predict, but know as a fact), then can I do otherwise, and prove God wrong?Wake up, wilderide. I'm not even God, but I know that you are going to eat something today (unless you have a religion that forbids it today). God's 'knowing' is not His 'will'.
If He wills that you not eat today, you will not find anything to eat.
As for God's will, it is impossible to oppose the will of an omnipotent deity. Which is why God would also be culpable for evil and sin.