'Day of the Lord' in the Bible

Be still at the presence of the LORD God, for the day of the LORD is at hand: yea, the LORD hath prepared a slain offering, and called his guests thereto.

And thus shall it happen in the day of the LORD's slain offering: I will visit the princes, the king's children, and all such as wear strange clothing.

For the great day of the LORD is at hand: it is heard by, and cometh on a pace. Horrible is the tidings of the LORD's day; then shall the giant cry out.

Neither their silver nor their gold shall be able to deliver them in that wrathful day of the LORD, but the whole land shall be consumed through the fire of his jealousy: for he shall soon make clean riddance of all them that dwell in the land.

Yea, or the day of the LORD's sore displeasure come upon you. Seek the LORD, all ye meek hearted upon earth, ye that work after his judgment: seek righteousness, seek lowliness, that ye may be defended in the wrathful day of the LORD.