“Armageddon” is the Greek corruption of Har Megiddo, “Mount of Megiddo.” As Baruch Halpern explains, the identification of the final battle in Revelation 16 with Megiddo is doubtless derived from a reference in Zechariah 12. There the prophet predicts that the Lord will take vengeance against those who destroyed Jerusalem. Oddly enough, the inhabitants of Jerusalem will take pity on those people and will wail for them as for a favorite son; indeed, their wailing “shall be as great as the wailing at Hadad-rimmon in the plain of Megiddon” (Zechariah 12:11). On that day, idols will be “erased” from the land (Zechariah 13:2). See also Eric H. Cline, “Why Megiddo?” Bible Review, June 2000.