2 Chronicles 20:10-22

10Now behold, the sons of Ammon and Moab and Mount Seir, whom You would not allow Israel to invade when they came from the land of Egypt (for they turned away from them and did not destroy them),

11here they are, rewarding us by coming to drive us out of Your possession which You have given us as an inheritance.

12O our God, will You not judge them? For we are powerless against this great multitude which is coming against us. We do not know what to do, but our eyes are on You.”

13So all Judah stood before the Lord, with their infants, their wives, and their children.

14Then in the midst of the assembly the Spirit of the Lord came upon Jahaziel the son of Zechariah, the son of Benaiah, the son of Jeiel, the son of Mattaniah, a Levite of the sons of Asaph.

15He said, “Listen carefully, all [you people of] Judah, and you inhabitants of Jerusalem, and King Jehoshaphat. The Lord says this to you: ‘Be not afraid or dismayed at this great multitude, for the battle is not yours, but God’s.

16Go down against them tomorrow. Behold, they will come up by the ascent of Ziz, and you will find them at the end of the river valley, in front of the Wilderness of Jeruel.

17You need not fight in this battle; take your positions, stand and witness the salvation of the Lord who is with you, O Judah and Jerusalem. Do not fear or be dismayed; tomorrow go out against them, for the Lord is with you.’ ”

18Jehoshaphat bowed with his face to the ground, and all Judah and the inhabitants of Jerusalem fell down before the Lord, worshiping Him.

19The Levites, from the sons of the Kohathites and the sons of the Korahites, stood up to praise the Lord God of Israel, with a very loud voice.

20So they got up early in the morning and went out into the Wilderness of Tekoa; and as they went out, Jehoshaphat stood and said, “Hear me, O Judah, and you inhabitants of Jerusalem! Believe and trust in the Lord your God and you will be established (secure). Believe and trust in His prophets and succeed.”

21When he had consulted with the people, he appointed those who sang to the Lord and those who praised Him in their holy (priestly) attire, as they went out before the army and said, “Praise and give thanks to the Lord, for His mercy and lovingkindness endure forever.”

22When they began singing and praising, the Lord set ambushes against the sons of Ammon, Moab, and Mount Seir, who had come against Judah; so they were struck down [in defeat].