Ephesians 6:13-14
wherefore invest yourselves with the set of divine armour, that ye may be able to withstand in the difficult day, and having overcome all to maintain your ground.
1 Thessalonians 5:2
for you very well know, that the day of the Lord steals on like a thief in the night.
2 Peter 3:10
As for that day of the Lord, it will advance like a thief: then the heavens will rush with violence, the boiling elements will be dissolved, and the earth with all its contents, shall be burnt away.
Revelation 6:17
for the great day of his wrath is come; and who shall be able to subsist?"
Revelation 16:14
for they are the spirits of demons working miracles, which make a progress to the kings of the whole world, to gather them to the battle of that great day of God almighty.
Revelation 20:8-9
and shall go out to seduce the nations, which are in the four quarters of the earth, Gog and Magog, to assemble them to battle: they will be as numerous as the sand of the sea.