2 Chronicles 20:22-24

22When they began to shout and praise, the Lord suddenly attacked the Ammonites, Moabites, and men from Mount Seir who were invading Judah, and they were defeated.

23The Ammonites and Moabites attacked the men from Mount Seir and annihilated them. When they had finished off the men of Seir, they attacked and destroyed one another.

24When the men of Judah arrived at the observation post overlooking the desert and looked at the huge army, they saw dead bodies on the ground; there were no survivors!