Let me clear up a few things here....
Before the fall they could not die.
Since mankind were created as mortals, then they could die....anything that deprived them of oxygen, food or water could kill them. God made his free willed creatures (both in heaven and on earth) mortal....IOW, there was no natural cause of death, but continued life depended on continued obedience. Continuing life was always conditional, right from the beginning....obey God and live...disobey God and die. There was only one rule and they broke it....but they were not the first to disobey their Creator. The first rebel was responsible for tempting the humans into disobedience. This meant that rebellion needed to be dealt with in both realms, with one single object lesson.
After the fall death came in many ways and separation from God in all manners was to exist for mankind. Shown by the many different beliefs and atheism too.
After the fall, God allowed the humans to 'reap what they had sown'. Once the 'genie was out of the bottle' (humans had disobeyed that one command and invited the death penalty on themselves) there was no sending it back. Once a knowledge of good and evil was theirs, (instead of being left in God's jurisdiction, where it belonged) their lives changed forever from that day forward. A knowledge of evil soon turned into evil deeds....and within one generation, a murder was committed.
Putting that great weight on Adam if you were the first man whom would you believe. Do you believe it is a lie in the book of Genesis where the serpent/snake is punished ?14 And the Lord God said unto the serpent, Because thou hast done this, thou art cursed above all cattle, and above every beast of the field; upon thy belly shalt thou go, and dust shalt thou eat all the days of thy life:
What the verse tells us it that the serpent was an animal..
What it tells us is that the devil used a serpent, but we have no idea how. Was the devil able to materialize in the form of a snake, or did he use the snake like a ventriloquist uses a dummy? It simply doesn't say. So if the snake was metaphorical in that instance, then perhaps the sentence was metaphorical as well. Why would God punish a literal snake for something an rebel angel had done? All snakes crawl on their belly.
Where in the bible has God's Sovereign right determined good and evil. The bible has always revealed God revealing to mankind the truth of right and wrong. Before the law came man was not convicted of sin. When God gave man the Law the first commandment was to love God and to have no other god and in truth he told them there was no other God.
King James Bible
I am the LORD, and there is none else, there is no God beside me: I girded thee, though thou hast not known me:
The mere fact that God had decided to keep that knowledge to himself proves that he did not want the humans to make that determination for themselves. It was not to be part of the terms of their tenancy here on this earth. God would decide what is good and what is evil, and protect his children accordingly....but they chose to know these things for themselves, and I'm sure it was a regretted decision considering what they lost that day.....their lives changed forever and not in a good way.
Reading through your post makes God sound human and worse still to have human traits like incompetence or that man is capable of controlling his own destiny.
HUH? How so? We are created in God's image...he is not created in ours. In our fallen condition we are a poor representation of what God originally purposed. Yet we are in full control of our own actions so God holds us accountable for the decisions we make...just like he did with Adam and his wife. If you know what to do and you don't do it, it is a sin.
Do you believe what you write is your opinion or really reflects an all powerful God who is omnipresent, omnipotent and omniscient.
Since God had a purpose in putting us here, and a rebel spirit forced him to make a detour, whatever happens will take us back to God's original purpose...he is not thwarted or defeated by his own creation. He is 'All Powerful' and 'All Knowing' but he is not 'Omnipresent'. He has a location remember...? "Our Father who art in Heaven..."
And his angels serve him in that realm....humans were to serve him down here on this earth.
What it does not explain is why God being omnipresent allowed Adam and Eve to make their choices when what they did was ultimately against Gods will for them? God having told the end from the beginning proves that in everything a man says or does, that Gods will, will still be done.
Free will was never absolute for obvious reasons....God had to be able to curb the abuse of free will should it occur. To set limits for free will was his Sovereign right, but the first rebel was not human.
God can always see "from the beginning...the end" (Isaiah 46:10) but with free willed beings, he will not force them to comply with his wishes....it has to be their choice to do so.....but he can reserve the right to remove those who cause harm or trouble for others. He allowed the humans to serve the 'god' they chose to obey, to show them where abuse of free will would take them. But all will be set right in the end....all that happened in Genesis is undone in Revelation.
If, Satan was a cherub what difference would it make to Gods will being done? Satan made the same mistake.... he thought killing Jesus off, he would stop the will of God. But really Gods will for Jesus was centred around knowing what Satan would do and failing to see, as with Adam God knows all the consequences and he works all things to the good of mankind.
God can always foresee the future outcome of everything, but he will not interfere with the activities of humans unless something interferes with his purpose.....then he will step in, like he did in Noah's day.