'Ashes' in the Bible

And the king commanded Hilkiah the high priest, and the priests of the second order, and the keepers of the door, to bring forth out of the temple of the LORD all the vessels that were made for Baal, and for the grove, and for all the host of heaven: and he burned them without Jerusalem in the fields of Kidron, and carried the ashes of them unto Bethel.

He brought the Asherah from the LORD's Temple to the Kidron Brook outside Jerusalem, burned it at the Kidron brook, pulverized the ashes to dust, and scattered it over the graves of the common people.

The altars which [were] on the roof of the upper room of Ahaz, which the kings of Judah had made, and the altars which Manasseh had made in the two courtyards of the temple of Yahweh, the king tore down and ran from there and threw their ashes into the Wadi Kidron.