2 Chronicles 20:12, 15, 17, 20-21

Our God, will You not judge them? For we are powerless before this vast number that comes to fight against us. We do not know what to do, but we look to You.

and he said, “Listen carefully, all Judah and you inhabitants of Jerusalem, and King Jehoshaphat. This is what the LORD says: ‘Do not be afraid or discouraged because of this vast number, for the battle is not yours, but God’s.

You do not have to fight this battle. Position yourselves, stand still, and see the salvation of the LORD. He is with you, Judah and Jerusalem. Do not be afraid or discouraged. Tomorrow, go out to face them, for Yahweh is with you.’ ”

In the morning they got up early and went out to the wilderness of Tekoa. As they were about to go out, Jehoshaphat stood and said, “Hear me, Judah and you inhabitants of Jerusalem. Believe in Yahweh your God, and you will be established; believe in His prophets, and you will succeed.” Then he consulted with the people and appointed some to sing for the LORD and some to praise the splendor of His holiness. When they went out in front of the armed forces, they kept singing: Give thanks to the LORD, for His faithful love endures forever.