The Prophecy Against Ahab
The scriptural account (1 Kings 22:1-27; 2 Chronicles 18) relates that when brought before Ahab and Jehoshaphat, Micaiah first echoed the favorable answer of the other prophets in apparent mockery, then, pressed for the truth, described a vision of the heavenly throne room in which a spirit comes forward to be 'a lying spirit in the mouth of the prophets.' Commentators regard this as one of Scripture's earliest depictions of the heavenly court. For his unwelcome word Micaiah was struck and imprisoned, yet Ahab fell in battle exactly as he had foretold.
The Two Prophets Named Micah
Orthodox tradition and modern scholarship distinguish two Old Testament figures whose names are rendered alike in English. The first is Micaiah son of Imlah, the contemporary of Ahab and Elias described above (commemorated January 5). The second is Micah of Moresheth, from Moresheth-Gath in southwest Judah, the sixth of the Twelve Minor Prophets, who prophesied in the eighth century BC alongside Isaiah, Amos, and Hosea and authored the Book of Micah with its prophecy of Bethlehem as the birthplace of the Messiah (Micah 5:2); his feast falls on August 14.
Because the two share the name 'Prophet Micah,' Orthodox liturgical sources frequently pair or conflate them, and a single commemoration may carry both the January 5 and August 14 dates, as it does in this record.