Revelation 16

13 and I saw [come] 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 spirits of demons, doing signs — which go forth unto the kings of the earth, and of the whole world, to bring them together to the battle of that great day of God the Almighty; —

15 ‘lo, I do come as a thief; happy [is] he who is watching, and keeping his garments, that he may not walk naked, and they may see his unseemliness,’ —

16 and they did bring them together to the place that is called in Hebrew Armageddon.