Except this is highly implausible. The story works together as an entire unit. One copy error could not make a dramatic difference in the whole story. It's not just one detail of the story that's disturbing. The entire story is disturbing! Also, there is no textual evidence for any sort of textual variants.[/QUOTE
CONSIDER THIS: God gave dominion over the earth to Adam's race for a season, until He came and ruled the earth. Adam knew this and it is in Genesis, written by Moses as God dictated the story to him. God respects His special creation that He made in His Image. When Adam fell there was a barrier keeping humanity away from intimacy with God and condemned mankind. God had planned salvation before hand and promised Adam and Eve that He would send His Savior for them and their children, the human race. God tied His own hands when Satan took away, by controlling Adam and Eve with guilt and breaking close relationship with God to them, tied because until He comes to save and rule the earth it is still Adam's race that has dominion, though Satan got hooks into humanity.
Essentially, God got men to invite Him to talk to and deal with Him, the history of the Bible. God would not FORCE HIMSELF against the free will God gave mankind nor usurp the will of mankind, as Satan loves to do. How would God get a perfect Savior into the earth to fix what Satan had stolen???? He covenanted with Abraham who loved God and God loved. He had given him the promised land of what would later become known as Israel from his offspring. Problem Abraham had no offspring, so God promised to give him and Sarah his wife a child in their old age.
Now to about why God got Abraham to be willing to sacrifice his only child. God would only deal with man, not usurping man's authority He gave them. Finally he had a man that trusted Him so much that when he took Isaac Abraham's son to be sacrificed that Abraham told the person attending their donkeys "my son and I will go and do the sacrifice and RETURN." Abraham trusted God to not take his son and if so bring him back to life. He was willing to sacrifice his son out of love and obedience to God. GOD had no intention of allowing it and provided the sacrifice, just as Abraham promised Isaac "God will provide the sacrifice". Such faith and trust was richly rewarded not only for him but for all of Adam's race.
Because God got a man to trust Him with the life of the man's son, God had LEGAL ENTRY to have the eternal Son/Word of God Who spoke all creation into existence and hands on made Adam in His Image -- have Him come to earth in the form of man, setting aside for 32 years on earth His Diety. Jesus came and did not use Diety to be the Savior of mankind but as a perfect sinless man Jesus was the Second Adam Who defeated Satan/Sin/death/hell/ and the grave as the PERFECT and FINAL sacrifice for man to ever offer - the ONLY ETERNAL sacrifice that would bridge the gap between the perfect God and fallen mankind. We accept or reject Jesus just as the ones before Jesus accepted God's promised Savior Who would come, we trust the One Who came.
Jesus did not lay down His life in vain my friend and He HAD to have a way to get His God Savior to earth to defeat Satan as a man, not defeating Satan by Godhood authority. All the animal sacrifices did not please God, but man's obedience to sacrifice animals, symbolic of His FINAL Sacrifice pleased God and covered sins for a season until the ONE sacrifice all symbolized came. A perfect sinless man was the only Sacrifice that God could honor, all human effort would fail - after all all humanity was flawed and separated from God. Jesus was God and not separated from His Father God. Yet Jesus could not defeat Satan as God but by USING the ADAMIC authority over the earth as the PERFECT SINLESS MAN, Adam had been. Only God sacrificing His Own Son could cover mankinds sins and defeat Satan, who always has lusted to be as God and exalt his earthly throne above that of his Creator God.
It is called balance. In our judicial system there is the potential for balance between justice and mercy. Mercy can be extended to those who made mistakes and strongly repent of their wrongdoing. Else justice is supposed to be issued. Still their is another way for a criminal to be set free, if a person is willing to take the penalty for the criminal to free the criminal. Humanity was the criminal, rebelling and far from God's intimacy and love, doing its own thing. God's Son came in an earth suit as Jesus to free all of Adam's race that would believe in Him - to come in the old covenant and came in the new covenant/testament. The ONE and ONLY eternal sacrifice has been made but we must accept Him as Savior to go free. Once we accept Him then our spirit man is Heaven ready and God has to get our cooperation and love to use His Word the Bible and Holy Spirit to get our carnal earthly minds to change to cooperate with our recreated/born again spirit man that He saved. When we grow more and more like Jesus the warfare between the physical carnal mind and the eternal spiritual mind we have, as well as desire to sin and disobey changes and we become more like Jesus. We must let the Holy Spirit of God Who indwells those born again and Heaven ready teach us and guide us and lead us on the best path we can follow in this fallen world and then carry us HOME to be with God and our elder brother/Son of God Jesus.