2 Chronicles 22:10
Athaliah, daughter of King Ahab and Jezebel, granddaughter of King Omri of Israel, usurped the throne of Judah. But Jehoshabeath, daughter of the king, took Joash, the son of Ahaziah, an infant at the time, and stole him away from among the king's sons. Jehoshabeath was Joash's aunt, a sister of Ahaziah. Perhaps she, too, was a daughter of Athaliah. Yet, when she saw the carnage taking place, she ran into the nursery, picked up Joash, and hid him so that Athaliah's thugs were unable to kill him (verse 12). He was hidden with them in the house of God for six years while Athaliah reigned over the land. Jehoshabeath had made a very good marriage, and this is probably what saved her. She had married Jehoiada, who was among the best high priests in all the history of Israel and Judah.
John W. Ritenbaugh
Why Three Kings Are Missing From Matthew 1