Joah in the Bible Encyclopedia - ISBE

jo'-a (yo'ach, "Yahweh is brother"): (1) Son of Asaph and recorder under King Hezekiah (2 Ki 18:18,26; Isa 36:3,11,22); he was one of the 3 officers sent by the king to speak to the Assyrian envoys at the siege of Jerusalem (circa 701 BC). (2) In 1 Ch 6:21 (Hebrew 6); 2 Ch 29:12, a Levite (son of Zimmah) = "Ethan" of 1 Ch 6:42 (Hebrew 27). (3) a son of Obed-edom (1 Ch 26:4). (4) Son of Joahaz and recorder under King Josiah (2 Ch 34:8).