1 Kings 13:1-3

And then this happened: Just as Jeroboam was at the Altar, about to make an offering, a holy man came from Judah by GOD’s command and preached (these were GOD’s orders) to the Altar: “Altar, Altar! GOD’s message! ‘A son will be born into David’s family named Josiah. The priests from the shrines who are making offerings on you, he will sacrifice—on you! Human bones burned on you!’” At the same time he announced a sign: “This is the proof GOD gives—the Altar will split into pieces and the holy offerings spill into the dirt.”