'Day of the Lord' in the Bible
Alas for the day! for the day of the LORD is at hand, and as a destruction from the Almighty shall it come.
Blow ye the trumpet in Zion, and sound an alarm in my holy mountain: let all the inhabitants of the land tremble: for the day of the LORD cometh, for it is nigh at hand;
And the LORD shall utter his voice before his army: for his camp is very great: for he is strong that executeth his word: for the day of the LORD is great and very terrible; and who can abide it?
“But I will remove the northern army far away from you,And I will drive it into a parched and desolate land,With its forward guard into the eastern sea (Dead Sea)And with its rear guard into the western sea (Mediterranean Sea).And its stench will arise and its foul odor of decay will come up [this is the fate of the northern army in the final day of the Lord],For He has done great things.”
The sun shall be turned into darkness, and the moon into blood, before the great and the terrible day of the LORD come.
Multitudes, multitudes in the valley of decision: for the day of the LORD is near in the valley of decision.