He gave a sign the same day, saying, This is the sign which the LORD has spoken: Behold, the altar shall be torn, and the ashes that are on it shall be poured out.
It happened, when the king heard the saying of the man of God, which he cried against the altar in Beit-El, that Yarov`am put forth his hand from the altar, saying, Lay hold on him. His hand, which he put forth against him, dried up, so that he could not draw it back again to him.
The king answered the man of God, Entreat now the favor of the LORD your God, and pray for me, that my hand may be restored me again. The man of God entreated the LORD, and the king's hand was restored him again, and became as it was before.
The battle increased that day: and the king was stayed up in his chariot against the Syrians, and died at even; and the blood ran out of the wound into the bottom of the chariot.
*For in the day that I visit the transgressions of Yisra'el on him, I will also visit the altars of Beit-El; and the horns of the altar will be cut off, and fall to the ground.
when a prophet speaks in the name of the LORD, if the thing doesn't follow, nor happen, that is the thing which the LORD has not spoken: the prophet has spoken it presumptuously, you shall not be afraid of him.