2 Chronicles 20:22-23

MLV^{(i) 22} And when they began to sing and to praise, Jehovah set an ambush against the sons of Ammon, Moab and Mount Seir who came against Judah and they were struck. ²³ For the sons of Ammon and Moab stood up against the inhabitants of Mount Seir, to kill* and destroy them utterly. And when they had made an end of the inhabitants of Seir, every one helped to destroy another of themselves.