Revelation 16:12-16 - The Sixth Bowl
12 And the sixth let what was in his vessel come out on the great river Euphrates; and it became dry, so that the way might be made ready for the kings from the east. 13 And I saw coming out of the mouth of the dragon, and out of the mouth of the beast, and out of the mouth of the false prophet, three unclean spirits, like frogs. 14 For they are evil spirits, working signs; who go out even to the kings of all the earth, to get them together to the war of the great day of God, the Ruler of all.
15 (See, I come as a thief. Happy is he who is watching and keeps his robes, so that he may not go unclothed, and his shame be seen.)
16 And they got them together into the place which is named in Hebrew Armageddon.