2 Re 21:19

Amon was twenty and two years old when he began to reign, and he reigned two years in Jerusalem. And his mother's name was Meshullemeth, the daughter of Haruz of Jotbah. He reigned two years in Jerusalem - The remark of the rabbins is not wholly without foundation, that the sons of those kings who were idolaters, and who succeeded their fathers, seldom reigned more than two years. So Nadab, the son of Jeroboam, 1 Re 15:25; Elah, the son of Baasha, 1 Re 16:8; Ahaziah, the son of Ahab, 1 Re 22:51; and Amon, the son of Manasseh, as mentioned here, 2 Re 21:19.