2 Chronicles 20:15-20

15He said: “Listen, King Jehoshaphat and all who live in Judah and Jerusalem! This is what the Lord says to you: ‘Do not be afraid or discouraged because of this vast army. For the battle is not yours, but God’s. 16Tomorrow march down against them. They will be climbing up by the Pass of Ziz, and you will find them at the end of the gorge in the Desert of Jeruel. 17You will not have to fight this battle. Take up your positions; stand firm and see the deliverance the Lord will give you, Judah and Jerusalem. Do not be afraid; do not be discouraged. Go out to face them tomorrow, and the Lord will be with you.’ ” 18Jehoshaphat bowed down with his face to the ground, and all the people of Judah and Jerusalem fell down in worship before the Lord. 19Then some Levites from the Kohathites and Korahites stood up and praised the Lord, the God of Israel, with a very loud voice. 20Early in the morning they left for the Desert of Tekoa. As they set out, Jehoshaphat stood and said, “Listen to me, Judah and people of Jerusalem! Have faith in the Lord your God and you will be upheld; have faith in his prophets and you will be successful.”