2 Chronicles 20:15-30

And he said: "Pay attention, all of Judah, and you who live in Jerusalem, and you, king Jehoshaphat. Thus says the Lord to you: Do not be afraid. Neither should you be dismayed by this multitude. For the fight is not yours, but God's. Tomorrow, you shall descend against them. For they will ascend along the incline named Ziz, and will find them at the summit of the torrent, which is opposite the wilderness of Jeruel. It will not be you who will fight. Instead, only stand with confidence, and you will see the help of the Lord over you, O Judah and Jerusalem. Do not be afraid. Neither should you be dismayed. Tomorrow you shall go forth against them, and the Lord will be with you." Then Jehoshaphat, and Judah, and all the inhabitants of Jerusalem fell prone on the ground before the Lord, and they adored him. And the Levites from the sons of Kohath, and from the sons of Korah, were praising the Lord, the God of Israel, with a great voice, on high. And when they had risen up in the morning, they went out through the desert of Tekoa. And as they were setting out, Jehoshaphat, standing in their midst, said: "Listen to me, men of Judah and all inhabitants of Jerusalem. Believe in the Lord your God, and you will be secure. Believe in his prophets, and everything will come to prosperity." And he gave counsel to the people. And he appointed the singing men of the Lord, so that they would praise him by their companies, and so that they would go before the army, and with one voice say: "Confess to the Lord. For his mercy is eternal." And when they had begun to sing praises, the Lord turned their ambushes upon themselves, that is, those of the sons of Ammon, and of Moab, and of mount Seir, who had gone forth so that they might fight against Judah. And they were struck down. For the sons of Ammon and of Moab rose up against the inhabitants of mount Seir, so that they might slay and destroy them. And when they had perpetrated this work, now also turning upon themselves, they cut one another with wounds. Then, when Judah had gone to the high point that looks out toward the desert, they saw, from far away, the entire wide region filled with dead bodies. Neither was there anyone who was left alive and had been able to escape death. Therefore, Jehoshaphat went, and all the people with him, in order to take away the spoils of the dead. And they found, among the dead bodies, diverse equipment, and also garments, and very precious vessels. And they despoiled these, to such an extent that they were unable to carry everything. Neither could they, over three days, take away the spoils because of the magnitude of the plunder. Then, on the fourth day, they were gathered together in the Valley of Blessing. For they had blessed the Lord there, and therefore they called that place the Valley of Blessing, even to the present day. And every man of Judah, and the inhabitants of Jerusalem, returned, with Jehoshaphat before them, to Jerusalem, with great rejoicing. For the Lord had granted to them gladness concerning their enemies. And they entered into Jerusalem with psalteries, and harps, and trumpets, into the house of the Lord. Then the fear of the Lord fell upon all the kingdoms of the lands, when they had heard that the Lord had fought against the enemies of Israel. And the kingdom of Jehoshaphat was quiet. And God granted to him peace on all sides.