For they are spirits of demons, performing signs, which go out to the kings of the earth and of the whole world, to gather them to the battle of that great day of God Almighty.  “Behold, I am coming as a thief. Blessed is he who watches, and keeps his garments, lest he walk naked and they see his shame.”   And they gathered them together to the place called in Hebrew, Armageddon.

Revelation 16:14-16   (NKJV)