Ephesians 6:13-14
Therefore take up the full armor of God, that, when the evil day comes, you may be able to withstand the attack, and, having fought to the end, still to stand your ground.
1 Thessalonians 5:2
You yourselves know well that the Day of the Lord will come just as a thief comes in the night.
2 Peter 3:10
The Day of the Lord will come like a thief; and on that day the heavens will pass away with a crash, the elements will be burnt up and dissolved, and the earth and all that is in it will be disclosed.
Revelation 6:17
for the great Day of their Wrath is come, and who can stand to meet it?'
Revelation 16:14
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 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.