For indeed, his mother, Athaliah, seeing that her son had died, rose up and killed the entire royal stock of the house of Jehoram
Other versions
King James Version
But when Athaliah the mother of Ahaziah saw that her son was dead, she arose and destroyed all the seed royal of the house of Judah.English Standard Version
Now when Athaliah the mother of Ahaziah saw that her son was dead, she arose and destroyed all the royal family of the house of Judah.New International Version
When Athaliah the mother of Ahaziah saw that her son was dead, she proceeded to destroy the whole royal family of the house of Judah.