2 Kings 23:14-16

14He smashed the sacred pillars to pieces, cut down the Asherah poles, and covered the sites with human bones.

15He even pulled down the altar at Bethel, the high place set up by Jeroboam son of Nebat, who had caused Israel to sin. Then he burned1 the high place, ground it to powder, and burned the Asherah pole. 16And as Josiah turned, he saw the tombs there on the hillside, and he sent someone to take the bones out of the tombs, and he burned them on the altar to defile it, according to the word of the LORD proclaimed by the man of God who had foretold these things.2