(From the Greek transliteration of an unknown Hebrew phrase usually thought to be Har-megiddo , “Mount Megiddo.”) The word “Armageddon” occurs in the Bible only in Rev. 16:16 , as the Hebrew name for a “place” to which three “unclean spirits” ( v. 13 ) gather “the kings of the earth” to “the battle of that great day of God Almighty” ( v. 14 )—John’s designation for what is popularly called the battle of Armageddon. The gathering to Armageddon is the principal feature of the sixth plague ( vs. 12–16 ). The sixth angel pours out his “bowl” upon “the great river Euphrates,” whose “water was dried up, to prepare the way for the kings from the east.” Then three “demonic spirits” resembling frogs go forth from the mouths of the “dragon,” the “b...

From the Seventh-day Adventist Encyclopedia. Published with permission from the Review and Herald Publishing Association.