Place of destruction and the archangel of the abyss in the Hebrew Bible
The Hebrew term Abaddon (Hebrew: אֲבַדּוֹן ’Ăḇaddōn, meaning "destruction", "doom"), and its Greek equivalent Apollyon (Koinē Greek: Ἀπολλύων, Apollúōn meaning "Destroyer") appear in the Bible as both a place of destruction and an angel of the abyss. In the Hebrew Bible, abaddon is used with reference to a bottomless pit, often appearing alongside the place Sheol (שְׁאוֹל Šəʾōl), meaning the resting place of dead peoples.
https://en.wikipedia.org/wiki/Abaddon