Mondo shtuff from around the internet, all about ABADDON!
Bible Gateway passage: Revelation 9:11 – New International Version: They had as king over them the angel of the Abyss, whose name in Hebrew is Abaddon and in Greek is Apollyon (that is, Destroyer).
My botty best at summarizing from Wikipedia: in the Hebrew Bible, abaddon is used with reference to a bottomless pit . its Greek equivalent Apollyon appears as both a place of destruction and an angel of the abyss . the the Biblical Antiquities (misattributed to Philo) mentions Abaddon as a place (destruction) rather than an individual . Proverbs 27:20: Hell (Sheol) and Destruction ( in Revelation 9:11, abaddon is described as “Destroyer”, the angel of the abyss . Protestant commentator Matthew Henry (1708) believed Abaddon to be the Antichrist . the angel having “the key of the abyss” is actually shown to be a representative of God . Revelation 20:1-3 concludes that “abaddon” is another name for Jesus after his resurrection . abbaton was promised that any who venerated him in life could be saved . he is also said to have a prominent role in the Last Judgement . described in the Apocalypse of Bart The Oxford Companion to the Bible. Oxford, UK: Oxford University Press. ISBN 0-19-504645-5.CS1 maint: extra text: authors list (link)Halley, Henry H.; James E Halley’s Bible Handbook. Grand Rapids, MI: Zondervan Publishing House. ISBN 0-310-22479-9.CS1 maint: extra text: authors list (link)MacDonald, William; Thomas Nelson Publishers. ISBN 0-8407-1972-8.CS1 maint: extra text: authors list (link)