doppelganger
Through the Looking Glass
I think that's a fair way of putting it, though in the story it isn't "Satan," it's "the serpent."satan was a liar from the beginning. It was not true, that as we are, we are unlike god without the knowledge of good and evil. The knowledge of good and evil is not knowledge but perception based on arbitrary judgment. In that arbitrary instant the wholeness or holiness of the kingdom is shattered perceptually. An error in perception does not change the real view, it just makes it obscure, hard to identify.
But let me ask you this: What exactly was the lie that the serpent told? Does "God" "know good and evil"?