They gathered (sunhgagen). Second aorist active indicative of sunagw, singular (the three unclean spirits), like ekporeuetai in verse Revelation 14 . Har-Magedon (Har-Magedwn). John proceeds now after the interruption in verse Revelation 15 . Perhaps "the mountains of Megiddo" though not certain. Megiddo is in the valley of Esdraelon, and by the waters of Megiddo (the Kishon) Israel gained a decisive victory over Sisera ( Judges 5:19 ), celebrated in Deborah's song. See also Revelation 20:8 and Ezekiel 39:2Ezekiel 39:4 .