pt2;
Secondly, God is immutable in His attributes. Whatever the attributes of God were before the universe was called into existence, they are precisely the same now, and will remain so for ever. Necessarily so; for they are the very perfections, the essential qualities of His being.
Semper idem (always the same) is written across every one of them. His power is unabated, His wisdom undiminished, His holiness unsullied. The attributes of God can no more change than Deity can cease to be. His veracity is immutable, for His Word is “for ever...settled in heaven” (Psa 119:89). His love is eternal: “I have loved thee with an everlasting love” (Jer 31:3) and “Having loved His own which were in the world, He loved them unto the end” (John 13:1). His mercy ceases not, for it is “everlasting” (Psa 100:5).
Thirdly, God is immutable in His counsel. His will never varies. Perhaps some are ready to object that we ought to read the following: “And it repented the LORD that He had made man” (Gen 6:6). Our first reply is, Then do the Scriptures contradict themselves? No, that cannot be. Numbers 23:19 is plain enough: “God is not a man, that He should lie; neither the son of man, that He should repent.” So also in I Samuel 15:29, “The Strength of Israel will not lie nor repent: for He is not a man, that He should repent.” The explanation is very simple. When speaking of Himself, God frequently accommodates His language to our limited capacities. He describes Himself as clothed with bodily members, as eyes, ears, hands, etc. He speaks of Himself as “waking” (Psa 78:65), as “rising up early” (Jer 7:13); yet He neither slumbers nor sleeps. When He institutes a change in His dealings with men, He describes His course of conduct as “repenting.” Yes, God is immutable in His counsel. “The gifts and calling of God are without repentance” (Rom 11:29). It must be so, for “He is in one mind, and who can turn from Him? and what His soul desireth, even that He doeth” (Job 23:13). Change and decay in all around we see, May He who changeth not abide with thee. God’s purpose never alters. One of two things causes a man to change his mind and reverse his plans: want of foresight to anticipate everything, or lack of power to execute them. But as God is both omniscient and omnipotent there is never any need for Him to revise His decrees. No, “The counsel of the LORD standeth for ever, the thoughts of His heart to all generations” (Psa 33:11). Therefore do we read of “the immutability of His counsel” (Heb 6:17).
One more thing, your argument is far outside what almost every Calvinist I have talked to on this Baptist Board. They say that God has free will and made Adam and Eve with it, and that man's free will is now Fallen and totally depraved. You are arguing God never had free will and never gave it. Another error to me in terms of even Reformed Systematic Theology.