Here in ACIM Jesus talks about the devil. He describes it is another other than our own self denial and what we do to ourselves. He makes it clear, it is not an external power. It is nothing other than our own egotism. By this reasoning, "the devil" as a distinct entity does not exist. It is another word for your own denial of God, which you have full power to undo.
This is in direct contradiction to Christianity.
"The devil is a frightening concept ONLY because he is thought of as extremely powerful and extremely active. He is perceived as a force in combat with God, battling Him for possession of Souls. He deceives by lies, and builds kingdoms of his own, in which everything is in direct opposition to God. Yet, he ATTRACTS men rather than repels them, and they are perceived as willing to "sell" him their Souls in return for gifts they KNOW are of no real worth at all.
This makes absolutely no sense. The whole picture is one in which man acts in a way he HIMSELF realizes is self destructive, but which he does NOT WILL to correct, and therefore perceives the cause as beyond his control."
"The mind can make the belief in Separation VERY real and VERY fearful. And this belief IS the devil. It is powerful, active, destructive, and clearly in opposition to God, because it literally denies His Fatherhood. Never underestimate power of this denial. Look at your lives and see what the devil has made. But KNOW that this making will surely dissolve in the light of truth, because its foundation IS a lie."
"Attacking misidentification errors is neither MY function nor YOURS. Destroying the devil is a meaningless undertaking. "
"Lucifer" could be literally translated "Light Bearer". He literally PROJECTED himself from Heaven. Projection still has this "hurling" connotation, because it involves hurling something you DO NOT want, and regard as dangerous and frightening, to someone else. This is the opposite of the Golden Rule, and having placed this rule upside down, the reverse of miracles, or projection, follows automatically."
"After all, Lucifer fell, but he was still an angel. He is thus the symbol for man. Atonement is the knowledge that the belief that angels can fall is false. It is true that mind can create projections as well as miracles, but it's NOT true that projections are REAL."
"The "Princes of this World" are princes only because they are really angels. But they are free to establish their kingdom where they see fit."