In biblical and religious texts, the angel or demon of the abyss; the place of destruction or hell itself.
From Hebrew 'Abaddon,' meaning 'destruction' or 'place of destruction.' It appears in the Old Testament and Book of Revelation, where it personifies the abyss or serves as the name of a destroying angel.
Abaddon appears in the Bible as both a place and an angel, and medieval writers couldn't decide which, so different religions assigned it different meanings—showing how ancient texts remained mysterious enough that people could argue about them for 2,000 years.
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