21 And when he had taken counsel with the people, he appointed those who should sing to LORD, and give praise in holy array, as they went out before the army, and say, Give thanks to LORD. For his loving kindness [is] forever.
22 And when they began to sing and to praise, LORD set an ambushment against the sons of Ammon, Moab, and mount Seir who came against Judah, and they were smitten.