'Day' in the Bible

Alas for the day!For the [judgment] day of the Lord is at hand,And it will come [upon the nation] as a destruction from the Almighty.

Blow the trumpet in Zion [warning of impending judgment],Sound an alarm on My holy mountain [Zion]!Let all the inhabitants of the land tremble and shudder in fear,For the [judgment] day of the Lord is coming;It is close at hand,

A day of darkness and gloom,A day of clouds and of thick [dark] mist,Like the dawn spread over the mountains;There is a [pagan, hostile] people numerous and mighty,The like of which has never been beforeNor will be again afterwardEven for years of many generations.

The Lord utters His voice before His army,For His camp is very great,Because strong and powerful is he who [obediently] carries out His word.For the day of the Lord is indeed great and very terrible [causing dread];Who can endure it?

Blow a trumpet in Zion [warning of impending judgment],Dedicate a fast [as a day of restraint and humility], call a solemn assembly.

“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 will be turned into darknessAnd the moon into bloodBefore the great and terrible day of the Lord comes.

Multitudes, multitudes in the valley of decision (judgment)!For the day of the Lord is near in the valley of decision [when judgment is executed].

And in that dayThe mountains will drip with sweet wineAnd the hills will flow with milk;And all the brooks and riverbeds of Judah will flow with water,And a fountain will go out from the house of the LordTo water the [desert] Valley of Shittim.