2 Chronicles 20:22-26

When they began singing and praising, the Lord set ambushes against the sons of Ammon, Moab, and Mount Seir, who had come against Judah; so they were struck down.

For the sons of Ammon and Moab rose up against the inhabitants of Mount Seir, completely destroying them; and when they had finished with the inhabitants of Seir, they helped to destroy one another.

When Judah came to the watchtower of the wilderness, they turned toward the multitude, and behold, they were corpses lying on the ground, and there was no survivor.

When Jehoshaphat and his people came to take their spoils, they found much among them, including goods, garments, and valuable things which they took for themselves, more than they could carry. And they were taking the spoils for three days because there was so much. Triumphant Return to Jerusalem

Then on the fourth day they assembled in the Valley of Beracah, for they blessed the Lord there. Therefore they have named that place “The Valley of Beracah” until today.