One idol, across the ages
The The Adversary
The opposing power named in every faith.
Why these are the same idol
A cosmos that is fundamentally good needs somewhere to put evil. The cleanest solution is to personify it, a single opposing will set against the ordering god.
The template is Zoroastrian: Ahriman (Angra Mainyu), the destructive spirit eternally at war with Ahura Mazda. During the Persian period this dualism seeps into Second-Temple Judaism, where “the satan” (the accuser) hardens into Satan, and from there into the Christian Devil and the Qur’anic Iblis, who refuses to bow and is cast down.
Egypt arrived independently at the same role with Set, murderer of Osiris and enemy of Horus, chaos against kingship. Different genealogies, one slot in the machine: the named opponent of the god who orders the world.