1 Kings 22:26-30 NIV

[26] The king of Israel then ordered, “Take Micaiah and send him back to Amon the ruler of the city and to Joash the king’s son [27] and say, ‘This is what the king says: Put this fellow in prison and give him nothing but bread and water until I return safely.’ ” [28] Micaiah declared, “If you ever return safely, the LORD has not spoken through me.” Then he added, “Mark my words, all you people!” [29] So the king of Israel and Jehoshaphat king of Judah went up to Ramoth Gilead. [30] The king of Israel said to Jehoshaphat, “I will enter the battle in disguise, but you wear your royal robes.” So the king of Israel disguised himself and went into battle.