Cross reference
2 Chronicles 22:10
10 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.
2 Kings 11:1-3
1 And when Athaliah the mother of Ahaziah saw that her son was dead, she arose and destroyed all the seed royal.
2 But Jehosheba, the daughter of king Joram, sister of Ahaziah, took Joash the son of Ahaziah, and stole him from among the king's sons which were slain; and they hid him, even him and his nurse, in the bedchamber from Athaliah, so that he was not slain.
3 And he was with her hid in the house of the LORD six years. And Athaliah did reign over the land.
2 Chronicles 22:2-4
2 Forty and two years old was Ahaziah when he began to reign, and he reigned one year in Jerusalem. His mother's name also was Athaliah the daughter of Omri.
3 He also walked in the ways of the house of Ahab: for his mother was his counselor to do wickedly.
4 Wherefore he did evil in the sight of the LORD like the house of Ahab: for they were his counselors after the death of his father to his destruction.