In Genesis 3:14 God is cursing the serpent contradicting your theory. additionally, it was God who promised Avraham the holy land and it was he who got the people of Israel out of Egypt to Mount Sinai and told us 613 commandments, which as I was told, Christ was not objecting to them or telling his followers this commandments were the word Satan. Also, I do recall the first commandment of the ten commandments Exodus 20:2 "I am the Lord your God, who brought you out of the land of Egypt, out of the house of bondage." in this phrase, God identified by his name. Judaism does not believe in two gods
The law is about knowledge of good and evil, which is the same as the symbol of the tree of knowledge of good and evil. Law was connected to Satan, by the symbolism of Satan in the tree of law, which teaches us good and evil. Law was not condoned by God in paradise, since God knew law would lead to death. Law is vulnerable to human subjectivity, whereas paradise was the logical product of natural selection and integration. Look at the dual injustice system in the USA. Law is flawed and corruptible. Any good defense law will try to game the legal system. Law can even be used to serve evil; Hitler.
Satan is often symbolized as a serpent or snake. This is a cold blooded critter, like strict enforcement of law and the cold impulses that need law, to control. Jesus, as the lamb, is symbolize a gentle and warm blooded critter; love.
My earliest intuitions on this came from the book of Job. In this book, Satan is getting God to alter the fate of Job. This shows how much control Satan was given on the earth, as Lord of the Earth. This symbolism shows how law can be used to lead God; laws of man and Satan, instead of follow his lead.
This finally all made sense if you assume God was resting on the first Sabbath day, with the duration of that rest not exactly quantified; open ended duration of rest. Days in the divine realm are not the same as earth days. How does day one in creation correlate to an earth day, when the earth was not yet formed? God is often describe as light; speed of light, which to me implied Einstein's relativity and time dilation. Different time references allows science and the Bible to agree on the time scale of creation.
If you look at science times estimate for cosmology to evolution, forming the universe takes the longest; 10-15 billion years, then the sun and earth; 5 billion, then life; about 1 billion, species; 100 million, etc. This implies a relativistic change in God's time reference; slowing from the speed of light reference, until God become man; earth time. This can be modeled With connected space-time and separated space and time.
If God was on the first Sabbath rest on day seven, and the human Sabbath was an image of the Divine, God would not be working as he rested. He would need to have others doing the work. Satan, who had been Lucifer, was near the top of the divine food chain. A third of the Angels served him; Revelations. He was put in the Garden by God, in advance, since God knew would be needed for God's upcoming rest. God would be like the chairman of the Board, who heads the steering committee, but does not do work. Satan would be the CEO in charge of daily operations, based on God's work order instructions. God was in on this, but Satan was given the job to implement God's policy, as God rested; tomato or tomarto.
Satan does not lose his job until Revelations. Satan was condoned in heaven from before Genesis to Revelation. He was in charge through the time of Jesus. But eventually he loses his job, and his power is no longer divinely sanctioned; thrown from heaven to the earth.
When Satan still had all his divine power, he offers Jesus all the kingdoms of the earth, if Jesus would bow and serve him. This offer is where the true authority of Satan, on earth, is shown. Had Jesus accepted the offer, he would have become the Messiah that had been promised by Satan, on behalf of God. Jesus refusal to accept the offer, alters the fate of Satan; New dispensation. Satan had tried to lead the Son of God astray, from the Sabbath rest, leading to a political battle in Heaven. Satan gets the boot with 1/3 of the Angels. Satan was very powerful.
Jesus said nobody has seen the Father except the Son. This is because God was on Sabbath rest and he was not working. However, he was still interacting with his family on the Sabbath. God did not even intercede for his Son, who died for the sins imply by Law. Satan was able to get even with Jesus, but he misjudges his authority as the Son. The political battle would reach a pinnacle and Satan would be demoted. Jesus would take over as CEO.
In Revlation God starts to work again, forming a new heaven and earth.