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, 1Ki 15:25; Elah, the son of Baasha, 1Ki 16:8; Ahaziah, the son of Ahab, 1Ki 22:51; and Amon, the son of Manasseh, as mentioned here, 2Ki 21:19.