How come I never see Christians talk about their myth about the etiology of sin?
In the beginning God created all the angels good. One of these archangels, Lucifer, who was likely a cherub, wanted to usurp the position of God out of pride, introducing sin into creation for the first time. Lucifer rebelled against God and his law, lost a war in heaven, and became a fallen angel. 1/3rd of the angels in heaven followed him in their rebellion and became the demons. Lucifer, as the author of sin, came to be known as Satan or the Devil. It was he who corrupted the rest of God's creation with sin and death when he tempted Adam and Eve in the garden of Eden in the form of a serpent.
How come no one discusses this myth? It's like one of the last hints of a Gnostic myth in mainstream Christian theology that Catholics, Orthodox, and Protestants all hold a variation of.