'Army' in the Bible

They bound on the tops of the mountains.Their sound is like the sound of chariots,like the sound of fiery flames consuming stubble,like a mighty army deployed for war.

The Lord raises His voicein the presence of His army.His camp is very large;Those who carry out His command are powerful.Indeed, the Day of the Lord is terrible and dreadful—who can endure it?

I will repay you for the yearsthat the swarming locust ate,the young locust, the destroying locust,and the devouring locust—My great army that I sent against you.