'Sister' in the Bible

However, the king's daughter Jehoshabeath took Ahaziah's son Joash away from the king's children who were about to be assassinated and hid him and his nurse in a bedroom. That's how King Jehoram's daughter Jehoshabeath, who was also the priest Jehoiada's wife and Ahaziah's sister, hid him from Athaliah. As a result, she was not able to kill him.