Following the Lord's command, the prophet denounced the altar: "O altar, altar, this is what the Lord says: A child, whose name will be Josiah, will be born to the family of David. He will slaughter on you the priests serving at the pagan altars who offer sacrifices on you, and he will burn human bones on you." 1
References for 1 Kings 13:2
13.2 2 K 23.15, 16.