7 He broke down the altars, and beat the Asherah poles and the engraved images into powder, and cut down all the incense altars throughout all the land of Israel, then returned to Jerusalem.
2 Chronicles 34:7 Cross References - WEB
Deuteronomy 9:21
21 I took your sin, the calf which you had made, and burned it with fire, and crushed it, grinding it very small, until it was as fine as dust. I threw its dust into the brook that descended out of the mountain.
2 Chronicles 31:1
1 Now when all this was finished, all Israel who were present went out to the cities of Judah, and broke the pillars in pieces, cut down the Asherah poles, and broke down the high places and the altars out of all Judah and Benjamin, also in Ephraim and Manasseh, until they had destroyed them all. Then all the children of Israel returned, every man to his possession, into their own cities.
2 Chronicles 34:1
1 Josiah was eight years old when he began to reign, and he reigned thirty-one years in Jerusalem.