Derbenski...
""What we do know is that Eve knew of God's command, whether it came through God Himself or the only other possibility, through Adam." -- mlsoft
"You cannot say that Adam was the only other possibility for obtaining secondhand knowledge. God is addressing at least one other, when figuring out what to do with the tree of life."
I am at a loss to discern the third possibility to which you apparently refer. Satan could not be the answer, because he is not a source of information about God for anyone, but specifically in this case, Eve made no reference in her conversation with Satan to any previous conversation with him which contradicted what he had just said, and what she told Satan was not the same as what Satan told her.
Again, I am at a loss to see what the third possibility was. By the way -- God never has to "figure out" anything. He knows the answer to everything without having to "think" about it.
"What if Adam had eaten from the tree of life first? Why that would have totally screwed up the whole program! God must have known that Adam would eat the other tree and not the tree of life first."
Of course God knew that Eve would eat of the tree of the knowledge of good and evil first. He knew everything that would happen before He began the work of Creation just as He has known since before Creation every act or thought that every person who ever lived or will ever live will do or have. That is part of what it means for God to be Omniscient.
So IF it were the the case that Adam were to eat of the tree first, then God would have known that to be the case before He ever began the work of Creation -- see the answer above. So IF that were the case, it would not have "screwed up" God's plan one iota -- it would have already been incorporated into His plan.
"One thing we do know from the story of Adam and Eve though, is that God will not die in the presence of sinners. Nor will sinners die in the presence of God."
Actually, that is not the case. I am pretty sure I mentioned that in a previous answer to you, but I will repeat it here (and elaborate on it a bit) just in case I am mistaken.
Remember that in the Old Testament, God is referred to as "elohim", which is the plural of "God". Also remember that God is a complex concept (taught fully in the New Testament) in which the Godhead is Triune, i.e. God the Father, God the Son, and God the Holy Spirit. Since Scripture teaches us that no man has ever seen God (the Father), and that sinful man could not exist in the presence of God (the Father), then it becomes clear that all appearances of God in the presence of sinful man are manifestations of God the Son -- Jesus -- and not God the Father. The Holy Spirit is just that, spirit, and as such is invisible.
Jesus spent much time in the presence of sinners. He ate with them, conversed with them, and indeed His task was that He was sent by God the Father to "seek and save the lost" ("the lost" = sinners). On the other hand, as noted above, sinful man cannot survive in the presence of the Holiness of God, and God cannot stand to be in the presence of any sin.
mlsoft