2 Chronicles 25:11-14

11Now Amaziah gathered his courage and led his people out, and went to 1the Valley of Salt, and struck and killed ten thousand of the sons of Seir. 12The sons of Judah also captured ten thousand alive and brought them to the top of the cliff, and threw them down from the top of the cliff so that they were all dashed to pieces. 13But the 2troops whom Amaziah sent back, those not going with him to battle, raided the cities of Judah from Samaria to Beth-horon, and struck and killed three thousand of them, and plundered a large amount of spoils.

14Now after Amaziah came from slaughtering the Edomites, 3he brought the gods of the sons of Seir and set them up as his gods. Then he bowed down before them and burned incense to them.