'Day of the Lord' in the Bible

Oh, no! For the Day of the LORD approaches, and like destruction from the Almighty, it will come!

"Sound the ram's horn in Zion! Sound an alarm on my holy mountain! Tremble, all of you inhabitants of the land, because the Day of the LORD is coming. Oh, how near it is!

The LORD will shout in the presence of his forces, because his encampment is very great; for powerful is he who carries out his message. Truly the Day of the LORD is great, and very terrifying. Who will be able to survive it?"

The sun will be given over to darkness, and the moon to blood, before the coming of the great and terrifying Day of the LORD.

"Multitudes, multitudes in the Valley of Judgment! For the Day of the LORD is near in the Valley of Judgment!