Micaiah was the prophet who predicted the death of King Ahab of Israel in the battle at Ramoth Gilead, against the Syrians (1 Kings 22:8-28). Ahab had a slew of so-called prophets that told him that he and King Jehoshaphat of Judah would be victorious in battle against the Syrian king. Jehoshaphat asked if there was a prophet of the Lord, because he was not convinced by Ahab's prophets. Ahab said there is still one man, Micaiah. But Ahab did not like Micaiah "because he does not prophesy good concerning me, but evil" (1 Kings 22:8). When asking Micaiah, he stated "I see all Israel scattered on the mountains as sheep that have no shepherd." Incensed by this prophecy, Zedekiah, Ahab's leading prophet, struck Micaiah on the cheek and called him a liar. Ahab chose to believe Zedekiah's predictions of victory and had Micaiah imprisoned. However, in the battle that followed, Ahab was killed, just as Micaiah predicted.
Micaiah is not mentioned in the Bible after that. Micaiah means "Who is like Yahweh."