'Day of the Lord' in the Bible

For the day of the LORD of Hosts shall go over all pride and presumption, upon all them that exalt themselves, and shall bring them all down:

Mourn therefore, for the day of the LORD is at hand, and cometh as a destroyer from the Almighty.

For lo, the day of the LORD shall come: terrible, full of indignation and wrath, to make the land waste, and to root out the sinners thereof.

For this is the day of the LORD of Hosts, wherein he will plague, tread down, and weed out the valley of visions, and break down the walls, with such a crack, that it shall give a sound in the mountains.