Joel 2:7-11

7They charge like warriors; they scale walls like soldiers. They all march in line, not swerving from their course. 8They do not jostle each other; each marches straight ahead. They plunge through defenses without breaking ranks. 9They rush upon the city; they run along the wall. They climb into the houses; like thieves they enter through the windows. 10Before them the earth shakes, the heavens tremble, the sun and moon are darkened, and the stars no longer shine. 11The Lord thunders at the head of his army; his forces are beyond number, and mighty is the army that obeys his command. The day of the Lord is great; it is dreadful. Who can endure it?