2 Chronicles 20:19-22

19Then some Levites stood up. They praised the Lord, Israel's God, with loud voices. They belonged to the clans of Kohath and Korah.

20Early the next morning, Jehoshaphat prepared to leave with his army. They started to march to the Tekoa desert. When they were ready to leave, Jehoshaphat stood up and he said, ‘Listen to me, people of Judah and people who live in Jerusalem! Trust in the Lord your God. Then you will be safe. Believe the message that his prophets have spoken. Then you will win the battle.’

21Jehoshaphat spoke with the people. He chose some musicians to march in front of his army. They sang songs to worship the Lord and to praise him for his holy power. As they marched, they sang, ‘We thank the Lord! His faithful love continues for ever!’

22As the musicians began to sing, the Lord suddenly made the soldiers of Judah's enemies confused.