2 Chronicles 22:11

but Jehosheba rescued Joash son of Ahaziah just as the others were about to be murdered. Jehosheba, who was Jehoram's daughter and Ahaziah's half-sister, was married to Jehoiada the priest. So she was able to hide her nephew Joash and his personal servant in a bedroom in the LORD's temple where he was safe from Athaliah.