Please forgive the length
I agree, but what are the overall implications? The following may seem to be radical, but bear with me and at least consider the implications. I need to tell one story in order to convey my understanding. Satan is a term used to identify an adversary. Take the account of the fall of man for example: The serpent (who became the voice of opposition) was already in the garden, yet all things were declared very good. It wasn't until Eve was tempted and deceived that the serpent became an adversary. If Satan was actually cast to the earth prior to the fall, then God would not have declared all things very good as Satan would have already been a fallen angel.
Everything God made was very good in the beginning, so Adam and Eve already knew good. The forbidden tree was good, the serpent (our desires and thoughts) was good, and everything that God had made was good prior to one act of disobedience. The serpent is simply mankind's inner voice, our innermost self seeking desires, which aren't bad until they begin to lead us to oppose what God desires for us. Our thoughts and our desires are often tempting, seducing, and alluring when entertained. They are able to ever so subtly lead us to disobey God. Satan is the inner voice of opposition and doubt, yet Satan can also be other human beings as in the case of Job. Satan simply means adversary.
The serpent (our inner voice of opposition) was cursed to consume the dust of the ground for the rest of his days after Adam and Eve disobeyed God. We are made from the dust of the ground, thus it was when Satan was cast to the earth that Satan (the serpent) was cursed to consume humanity, whereby Adam and Eve became Satan's angels (children of disobedience and adversaries to God).
"And the great dragon was thrown down, that ancient serpent, who is called the devil and Satan, the deceiver of the whole world— he was thrown down to the earth, and his angels were thrown down with him."
They were cast down with Satan; they fell from paradise (heaven) because they yielded to their doubts, they yielded to our inner most desires, they yielded to self and forsake God's statutes. Adam and Eve had became disobedient children of the devil, they had forsake God's statutes and yielded to self desire, thus lost their innocence in the process.
"I have said, Ye are gods (Elohim); and all of you are children of the most High. But ye shall die like men, and fall like one of the princes."
"What is man, that thou art mindful of him? and the son of man, that thou visitest him? For thou hast made him a little lower than the angels (Elohim) and hast crowned him with glory and honour."
We are elohim (gods/angels) fallen from heaven (paradise). Once obedient children of God (Elohim) now disobedient children of Satan (that which opposes God's will for us/adversary). The good news is that Jesus came to show us the way home, the way back to paradise (heaven). Jesus embodied the fullness of the Godhead. In other words, Jesus was born part of God's eternal family unit. Our Father is spirit (Breath of life) and the Holy Spirit is love (The essence of God). Those born again of the Holy spirit are eternal children of God, just as Jesus was a Son of God.
Adam was an immortal Son of God prior to falling, but he became, like all who came after, mortal sons of men (children of disobedience), which is why Jesus says we must be born again of the Holy Spirit (love) in order for us to become a part of the God's eternal Family again.
"The wages of sin are death" We are gods (angels/children) of the most high, who fell from heaven (paradise) by our disobedience. "I have said, Ye are gods (Elohim); and all of you are children of the most High. We are children of the most high who fell from paradise, and in order to regain our immortality, we must once again yield to God (who is life and love).
