2 Chronicles 22:10

⁸And it came to pass, when Jehu was taking vengeance on the house of Ahab, that he found the princes of Judah and the brethren of Ahaziah ministering to Ahaziah, and he slew them.

⁹And he gave orders to seek Ahaziah: and they took him while he was healing his wounds in Samaria, and they brought him to Jehu, and he slew him; and they buried him, for they said, He is the son of Jehoshaphat, who sought the Lord with all his heart. So there was none in the house of Ahaziah to secure their power in the kingdom.

— 2 Chronicles 22:10 —

¹¹But Jehoshabeath, the daughter of the king, took Joash the son of Ahaziah and rescued him secretly out of the midst of the sons of the king that were put to death, and she placed him and his nurse in a bedchamber. So Jehoshabeath daughter of King Jehoram, sister of Ahaziah, wife of Jehoiada the priest, hid him, and she even hid him from Athaliah, and she did not slay him.

¹²And he was with him hidden in the house of God six years; and Athaliah reigned over the land.