New Defender's Study Bible Notes
3:7 I am as thou art. Although Jehoshaphat was a godly king, he was related to Jehoram by marriage. Althaliah was a sister of Israel’s Jehoram (both were children of Ahab), and was married to Judah’s Jehoram, who was son of Jehoshaphat. Jehoshaphat also may have been encouraged by the fact that Jehoram had stored away the idol of Baal made and worshipped by his father Ahab. Jehoshaphat, however, had twice previously made unfortunate alliances with kings of Israel—once with Ahab (I Kings 22:29) and once with Ahaziah (II Chronicles 20:35).