2 Chronicles 20:22-24

22When they began singing and praising, the Lord 1set ambushes against the sons of 2Ammon, Moab, and Mount Seir, who had come against Judah; so they were struck down. 23For the sons of Ammon and Moab rose up against the inhabitants of Mount Seir, completely destroying them; and when they had finished with the inhabitants of Seir, 3they helped to destroy one another.

24When Judah came to the watchtower of the wilderness, they turned toward the multitude, and behold, they were corpses lying on the ground, and there was no survivor.