I have read many of Pagels’s books; I read this one during the late 90’s.
The Origin of Satan: How Christians Demonized Jews, Pagans, and Heretics
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From the religious historian whose The Gnostic Gospels won both the National Book Award and the National Book Critics Circle Award comes a dramatic interpretation of Satan and his role on the Christian tradition. With magisterial learning and the elan of a born storyteller, Pagels turns Satan’s story into an audacious exploration of Christianity’s shadow side, in which the gospel of love gives way to irrational hatreds that continue to haunt Christians and non-Christians alike.
A brief history of belief in the Devil (950 BCE – 70 CE)
This also may interest some of you. ( I read this in it’s entirety during early 2000’s,.)
The Gnostic Bible: Revised and Expanded Edition by Willis Barnstone, Marvin Meyer