2 Kings 11:2-3

2Jehosheba, who was King Jehoram’s daughter and Ahaziah’s sister, secretly rescued Joash son of Ahaziah from among the king’s sons who were being killed and put him and the one who nursed him in a bedroom. So he was hidden from Athaliah and was not killed.

3Joash was in hiding with her in the Lord’s temple six years while Athaliah reigned over the land.