2 Chronicles 22:9-11
New Catholic Bible
9 Then Jehu went forth in search of Ahaziah, and his men captured him while he was hiding in Samaria. They brought Ahaziah to Jehu, who put him to death. However, they buried him, for they said: “He was the grandson of Jehoshaphat who sought the Lord with all his heart.” As a result, there was no one remaining from the house of Ahaziah who was strong enough to rule.
10 When Athaliah, the mother of Ahaziah, was told that her son was dead, she was determined to destroy all the royal offspring of the house of Judah. 11 However, Jehosheba, the daughter of King Jehoram, secretly took Joash, the son of Ahaziah, and stole him away from among the king’s sons who were about to be killed, and she put him with his nurse in a bedroom.
In this way, Jehosheba, who was the daughter of King Jehoram and the wife of Jehoiada the priest, as well as a sister of Ahaziah, hid Joash from Athaliah so that she was unable to kill him. Read full chapter
