1 Kings 22:10-12

10The king of Israel and Jehoshaphat the king of Judah, having put on their robes, sat each on his throne, at a threshing floor at the entrance of the gate of Samaria; and all the prophets prophesied before them.

11Now Zedekiah the son of Chenaanah had made horns of iron for himself; and he said, “Thus says the Lord: ‘With these you shall gore the Syrians until they are destroyed.’ ”

12And all the prophets prophesied so, saying, “Go up to Ramoth Gilead and prosper, for the Lord will deliver it into the king’s hand.”