2 Thessalonians 1:7
And to give relief to you who are suffering, as well as to us, at the Appearing of the Lord Jesus from Heaven with his mighty angels, 'in flaming fire.'
Revelation 16:14-16
They are the spirits of demons, and perform marvels; they go to kings all over the world, to collect them for the battle on the Great Day of Almighty God.
Revelation 19:14
The armies of Heaven followed him, mounted on white horses and clothed in fine linen, white and pure.
Revelation 19:19-20
Then I saw the Beast and the kings of the earth and their armies, gathered together to fight with him who sat on the horse and with his army.
Revelation 20:8-9
and he will come out to deceive the nations that live in 'the four corners of the earth--Gog and Magog.' He will come to gather them together for battle; and their number will be as great as the sand on the sea-shore.