And when Judah came toward the watch tower in the wilderness, they looked unto the multitude, and, behold, they were dead bodies fallen to the earth, and none escaped. And when Jehoshaphat and his people came to take away the spoil of them, they found among them in abundance both riches with the dead bodies, and precious jewels, which they stripped off for themselves, more than they could carry away: and they were three days in gathering of the spoil, it was so much. And on the fourth day they assembled themselves in the valley of Berachah; for there they blessed the LORD: therefore the name of the same place was called, “The valley of Berachah,” unto this day.
Then they returned, every man of Judah and Jerusalem, and Jehoshaphat in the forefront of them, to go again to Jerusalem with joy; for the LORD had made them to rejoice over their enemies. And they came to Jerusalem with psalteries and harps and trumpets unto the house of the LORD. And the fear of God was on all the kingdoms of those countries, when they had heard that the LORD fought against the enemies of Israel.
So the realm of Jehoshaphat was quiet: for his God gave him rest round about. And Jehoshaphat reigned over Judah: he was thirty and five years old when he began to reign, and he reigned twenty and five years in Jerusalem. And his mother’s name was Azubah the daughter of Shilhi. And he walked in the way of Asa his father, and departed not from it, doing right in the sight of the LORD. Howbeit the high places were not taken away: for as yet the people had not prepared their hearts unto the God of their fathers.
Now the rest of the acts of Jehoshaphat, first and last, behold, they are written in the book of Jehu the son of Hanani, who is mentioned in the book of the kings of Israel. 2 Chronicles 20:24-34
For further study: 2 Chronicles 19; 20:1-23, 35-37; Psalm 110; 150:3-5; Romans 8:31-39; Revelation 19:1-6