'Day of Battle' in the Bible

So it came about on the day of battle that neither sword nor spear was found in the hands of any of the people who were with Saul and Jonathan; but Saul and Jonathan his son had them.

Which I have reserved for the time of trouble,For the day of battle and war?

The sons of Ephraim were armed as archers and carrying bows,Yet they turned back in the day of battle.

“O God the Lord, the strength of my salvation,You have covered my head in the day of battle.

The horse is prepared for the day of battle,But deliverance and victory belong to the Lord.

Therefore an uproar will arise among your people,And all your fortresses will be destroyed,As Shalman destroyed Beth-arbel on the day of battle,When mothers were dashed in pieces with their children.

“So I will kindle a fire [of war, conquest, and destruction] on the wall of Rabbah [in Ammon]And it shall devour its strongholdsAmid war cries and shouts of alarm on the day of battle,And a tempest on the day of the whirlwind [when the enemy captures the city].

Then the Lord will go forth and fight against those nations, as when He fights on a day of battle.