2 Chronicles 34:3

34:3 In the eighth year of his reign, while he was still young, he began to seek the God of his ancestor David. In his twelfth year he began ridding Judah and Jerusalem of the high places, Asherah poles, idols, and images.

2 Chronicles 34:7

34:7 he tore down the altars and Asherah poles, demolished the idols, and smashed all the incense altars throughout the land of Israel. Then he returned to Jerusalem.