2 Chronicles 20:10-17

Now 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), [Deut 2:9] here they are, rewarding us by coming to drive us out of Your possession which You have given us as an inheritance. O 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.” So all Judah stood before the LORD, with their infants, their wives, and their children. Then 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. He 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. Go 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. You 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.’ ”