2 Chronicles 20:21-22, 24

After consulting the people, the king appointed singers to walk ahead of the army, singing to the LORD and praising him for his holy splendor. This is what they sang: “Give thanks to the LORD; his faithful love endures forever!” At the very moment they began to sing and give praise, the LORD caused the armies of Ammon, Moab, and Mount Seir to start fighting among themselves.

So when the army of Judah arrived at the lookout point in the wilderness, all they saw were dead bodies lying on the ground as far as they could see. Not a single one of the enemy had escaped.