2 Chronicles 17:3-4 (NIV)
The Lord was with Jehoshaphat because he followed the ways of his father David before him. He did not consult the Baals but sought the God of his father and followed his commands rather than the practices of Israel.

2 Chronicles 20:1-2 (NIV)
After this, the Moabites and Ammonites with some of the Meunites came to wage war against Jehoshaphat. Some people came and told Jehoshaphat, “A vast army is coming against you from Edom, from the other side of the Dead Sea. It is already in Hazezon Tamar” (that is, En Gedi).

2 Chronicles 20:3-4 (NIV)
Alarmed, Jehoshaphat resolved to inquire of the Lord, and he proclaimed a fast for all Judah. The people of Judah came together to seek help from the Lord; indeed, they came from every town in Judah to seek Him.

2 Chronicles 20:13 (NIV)
All the men of Judah, with their wives and children and little ones, stood there before the Lord.

2 Chronicles 20:12 (NIV)
Our God, will you not judge them? For we have no power to face this vast army that is attacking us. We do not know what to do, but our eyes are on You.”

2 Chronicles 20:14 (NIV)
Then the Spirit of the Lord came on Jahaziel son of Zechariah, the son of Benaiah, the son of Jeiel, the son of Mattaniah, a Levite and descendant of Asaph, as he stood in the assembly.

2 Chronicles 20:15-17 (NIV)
He 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. Tomorrow 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. You 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.’”

2 Chronicles 20:21 (NIV)
After consulting the people, Jehoshaphat appointed men to sing to the Lord and to praise Him for the splendor of His holiness as they went out at the head of the army, saying: “Give thanks to the Lord, for His love endures forever.”

2 Chronicles 20:23 (NIV)
The Ammonites and Moabites rose up against the men from Mount Seir to destroy and annihilate them. After they finished slaughtering the men from Seir, they helped to destroy one another.