JRG,
Your question broaches the issue of "sovereignty" of God. Many will say that God is totally sovereign -- His will is always accomplished. Others the God allows man to be sovereign over his own life and the lives of those under his authority. Intriguing question, right?
The answer is plainly (IMO) seen. If God were totally sovereign, we would be living in the "kingdom of God." That is, there would be no sin, death, or hell. Are we?
Indeed not! There will be such a day -- in the New Earth, Rev 21-22. As a matter of fact, I believe that the Father, Son, and Holy Spirit will not be a trinity then and that man, likewise, will have the mind of God, not merely of Christ (per 1Cor 2:16). But right now we are made in God's image and have freedom to make choices that God would not, right?
Therefore, when God foreknew all that would transpire throughout the ages, He did change His mind depending on our decisions and our prayers.
skypair