2 Kings 23:10-14

Then the king defiled the altar of Topheth in the valley of Ben-Hinnom, so no one could ever again use it to sacrifice a son or daughter in the fire as an offering to Molech.

He removed from the entrance of the Lord’s Temple the horse statues that the former kings of Judah had dedicated to the sun. They were near the quarters of Nathan-melech the eunuch, an officer of the court. The king also burned the chariots dedicated to the sun.

Josiah tore down the altars that the kings of Judah had built on the palace roof above the upper room of Ahaz. The king destroyed the altars that Manasseh had built in the two courtyards of the Lord’s Temple. He smashed them to bits and scattered the pieces in the Kidron Valley.

The king also desecrated the pagan shrines east of Jerusalem, to the south of the Mount of Corruption, where King Solomon of Israel had built shrines for Ashtoreth, the detestable goddess of the Sidonians; and for Chemosh, the detestable god of the Moabites; and for Molech, the vile god of the Ammonites.

He smashed the sacred pillars and cut down the Asherah poles. Then he desecrated these places by scattering human bones over them.