2 Chronicles 33:15

And he took away the strange gods, and the idol out of the house of the Lord,.... Which he had set there, 2 Chronicles 33:7

and all the altars that he had built in the mount of the house of the Lord, and in Jerusalem; see 2 Chronicles 33:4,

and cast them out of the city; perhaps into the brook Kidron; all this he did to show the sincerity of his repentance for his idolatry, and his abhorrence of it.