On the fourth day they assembled in the Valley of Berakah, where they praised the LORD. This is why it is called the Valley of Berakah to this day.
References for 2 Chronicles 20:26
Then, led by Jehoshaphat, all the men of Judah and Jerusalem returned joyfully to Jerusalem, for the LORD had given them cause to rejoice over their enemies.
They entered Jerusalem and went to the temple of the LORD with harps and lyres and trumpets.