Jehoiada ( "Yəhōyāḏā‘", "Yahweh knows") in the Hebrew Bible, was a prominent priest in the kingdom of Judah during the reigns of Ahaziah (reigned c. 842 - 841 BCE), Athaliah (reigned c. 841–835 BCE), and Joash (reigned c. 836–796 BC). Jehoiada became the brother-in-law of King Ahaziah as a result of his marriage with princess Jehosheba. Both Jehosheba and Ahaziah were children of King Jehoram of Judah (reigned c. 849 – 842 BCE). Ahaziah died a year after assuming the throne, which was then usurped by his mother Athaliah, who ordered the execution of all members of the royal family.