2 Kings 23 20
He punished with death all the priests who served false gods at those altars. He killed them on their own altars. He burned human bones on all the altars. After he had done that, he went back to Jerusalem.
Compare with other 3 random translations
NIV 2 Kings 23:20Josiah slaughtered all the priests of those high places on the altars and burned human bones on them. Then he went back to Jerusalem.
GNV 2 Kings 23:20And he sacrificed all the Priests of the hie places, that were there vpon the altars, and burnt mens bones vpon them, and returned to Ierusalem.
AMP 2 Kings 23:20All the priests of the high places who were there he slaughtered on the altars, and burned human bones on them [to desecrate the places forever]. Then he returned to Jerusalem.Passover Reinstituted