2 Chronicles 20:22-24

22As they began singing and praising, Adonai set ambushes against the children of Ammon, Moab, and Mount Seir who had come against Judah, and they were defeated.

23For the Ammonites and Moabites rose up against the inhabitants of Mount Seir to exterminate and annihilate them. When they had exterminated the inhabitants of Seir, they helped to destroy one another.

24When Judah came to the lookout in the wilderness and looked for the multitude, behold, only corpses were lying on the ground—no one had escaped.