Zoroastrian cosmic conflict, later Jewish demonology, ha-satan, Satan, and Belial traditions help explain how opposition becomes personal, cosmic, and eschatological.

Core Ideas

No simple borrowingInfluence should be treated carefully: contact, parallel development, and later interpretation are different claims.
Adversary developmentThe shift from opponent, accuser, or hostile power toward final cosmic enemy matters for Antichrist reception history.
Research pathTrack texts, dates, languages, and communities instead of flattening several traditions into one origin story.