15 And he said, "Listen, all Judah and inhabitants of Jerusalem and King Jehoshaphat: Thus says the Lord to you, 'Do not be afraid and do not be dismayed at this great horde, for the battle is not yours but God's. 16 Tomorrow go down against them. Behold, they will come up by the ascent of Ziz. You will find them at the end of the valley, east of the wilderness of Jeruel. 17 You will not need to fight in this battle. Stand firm, hold your position, and see the salvation of the Lord on your behalf, O Judah and Jerusalem.' Do not be afraid and do not be dismayed. Tomorrow go out against them, and the Lord will be with you." 18 Then Jehoshaphat bowed his head with his face to the ground, and all Judah and the inhabitants of Jerusalem fell down before the Lord, worshiping the Lord. 19 And the Levites, of the Kohathites and the Korahites, stood up to praise the Lord, the God of Israel, with a very loud voice.
20 And they rose early in the morning and went out into the wilderness of Tekoa. And when they went out, Jehoshaphat stood and said, "Hear me, Judah and inhabitants of Jerusalem! Believe in the Lord your God, and you will be established; believe his prophets, and you will succeed." 21 And when he had taken counsel with the people, he appointed those who were to sing to the Lord and praise him in holy attire, as they went before the army, and say, "Give thanks to the Lord, for his steadfast love endures forever." 22 And when they began to sing and praise, the Lord set an ambush against the men of Ammon, Moab, and Mount Seir, who had come against Judah, so that they were routed. 23 For the men of Ammon and Moab rose against the inhabitants of Mount Seir, devoting them to destruction, and when they had made an end of the inhabitants of Seir, they all helped to destroy one another. 24 When Judah came to the watchtower of the wilderness, they looked toward the horde, and behold, there[1] were dead bodies lying on the ground; none had escaped.
Matthew Henry's Commentary on 2 Chronicles 20:15-24
Commentary on 2 Chronicles 20:14-19
(Read 2 Chronicles 20:14-19)
The Spirit of prophecy came upon a Levite in the midst of the congregation. The Spirit, like the wind, blows where and on whom He listeth. He encouraged them to trust in God. Let the Christian soldier go out against his spiritual enemies, and the God of peace will make him more than a conqueror. Our trials will prove our gain. The advantage will be all our own, but the whole glory must be given to God.
Commentary on 2 Chronicles 20:20-30
(Read 2 Chronicles 20:20-30)
Jehoshaphat exhorted his troops to firm faith in God. Faith inspires a man with true courage; nor will any thing help more to the establishing of the heart in shaking times, than a firm belief of the power, and mercy, and promise of God. In all our trust in the Lord, and our praises of him, let us especially look at his everlasting mercy to sinners through Jesus Christ. Never was an army so destroyed as that of the enemy. Thus God often makes wicked people destroy one another. And never was a victory celebrated with more solemn thanksgivings.