2 Chronicles 20:21-23

American Standard Version

²¹ And when he had taken counsel with the people, he appointed them that should sing unto Jehovah, and give praise ^[a]in holy array, as they went out before the army, and say, Give thanks unto Jehovah; for his lovingkindness endureth for ever. ²² And when they began to sing and to praise, Jehovah set liers-in-wait against the children of Ammon, Moab, and mount Seir, that were come against Judah; and they were smitten. ²³ For the children of Ammon and Moab stood up against the inhabitants of mount Seir, utterly to slay and destroy them: and when they had made an end of the inhabitants of Seir, every one helped to destroy another.