Ahaziah of Judah was king of Judah, and the son of Jehoram and Athaliah, the daughter of king Ahab of Israel. He is also called Jehoahaz (2 Chronicles 21:17; 25:23). Albright has dated his reign to 842 BC, while Thiele offers the date 841 BC. Under the influence of his mother Athaliah, he introduced forms of worship that the author of Kings found offensive.
He joined his uncle Jehoram, king of Israel, in an unsuccessful expedition against Hazael, king of the Arameans. Jehroam was wounded in the battle, and when Ahaziah went to visit his uncle at Jezreel, he was caught up in the revolt of Jehu; Ahaziah fled for his life, but was wounded at the pass of Gur, and had strength only to reach Megiddo, where he died (2 Kings 9:22-28). He is said to have reigned only one year.
The author of the inscription on the Tel Dan Stele (found in 1993 and 1994 during archeological excavations of the site of Laish) claimed to have slain both Ahaziah, son of Jehoram, and Jehoram; the most likely author of this monument is Hazael of the Arameans. Although the inscription is a contemporary witness of this period, kings of this period were inclined to boast and make exaggerated claims; it is not clear whether Jehu killed the two kings (as the Bible reports) or Hazael (as the Dan Stele reports).
The son of a brutal couple, King Jehoram and Queen Athaliah, and grandson of Israel's idol-addicted King Ahab, Ahaziah followed the evil path of his forbears during his one year as Judah's king.
Ahaziah was the nephew, through his mother, of Israel's evil King Jehoram (brother-in-law of the other King Jehoram, Ahaziah's father), and the two became close confidants.
However, Ahaziah's baby son Joash was rescued by Ahaziah's sister Jehosheba, and later Athaliah's crime was capitally punished, and Joash made king.