10
Athaliah was Ahaziah's mother. She saw that her son was dead. So she began to wipe out the whole royal house of Judah.
11
But Jehosheba went and got Joash, the son of Ahaziah. She was the daughter of King Jehoram. She stole Joash away from among the royal princes. All of them were about to be murdered. She put Joash and his nurse in a bedroom. Jehosheba, the daughter of King Jehoram, was the wife of the priest Jehoiada. She was also Ahaziah's sister. So Jehosheba hid the child from Athaliah. That's why Athaliah couldn't kill him.
12
The child remained hidden with the priest and his wife at God's temple for six years. Athaliah ruled over the land during that time.