Micaiah (“who is like Jehovah”) — the name being the same as Micah. According to Josephus, he was the prophet of 1 Kings 20:35-43, who had “prophesied evil” of Ahab for his rash action towards Benhadad, and had already been imprisoned by him. The whole description, and especially the words of 1 Kings 22:26, seem to confirm this account.
Related Commentaries of 1 Kings 22:8
1 Kings 22:8
8 And the king of Israel said unto Jehoshaphat, There is yet one man, Micaiah the son of Imlah, by whom we may enquire of the LORD: but I hate him; for he doth not prophesy good concerning me, but evil. And Jehoshaphat said, Let not the king say so.