The revolt of Jeroboam and the ten northern tribes reduced the dominion ruled by Rehoboam, grandson of David, to narrow bounds. Before his disastrous reign was over, Judah was still further humiliated by an invasion under Shishak, a Pharaoh of the twenty-second dynasty of Egypt, who despoiled Jerusalem of the treasures which Solomon had amassed. After the death of Rehoboam and the short reign of his son, Abijam, Judah was ruled successively by Asa and Jehoshaphat, each succeeding his father peacefully and each reigning long and, on the whole, prosperously. Another invasion from the south which threatened to be as disastrous as that of Shishak, under "Zerah the Ethiopian" was repelled by Asa. Internal reforms, both religious and civil, were carried out by these vigorous rulers. The natural rivalry and intermittent warfare between north and south, which had arisen through the division under Rehoboam, ceased for a time after Jehoshaphat entered into alliance with King Ahab and took Athaliah, Ahab's daughter, as wife for his son Joram. The kings of Samaria and Jerusalem made common cause against Syria and Moab, and a temporary success seemed to crown the new policy. But prophets of Jehovah repeatedly warned the king who sat on David's throne of the danger to the true religion from such an alliance with Baal worshipers. It was not long before their warnings were justified by the facts. Athaliah, Joram's queen, was the daughter not only of Ahab but also of Jezebel and brought with her to Jerusalem the fierce spirit and heathen habits of her Tyrian mother. King Ahaziah her son lost his life through his close association with King Jehoram of Israel, his uncle, for Jehu made away with both kings at the same time, and with all the princes of Judah, kinsmen of Ahaziah, on whom he could lay his hands. The old tigress at Jerusalem, Athaliah, now turned upon her own flesh and blood, the children of Ahaziah, and murdered them all so as to secure the power for herself. One grandson alone, the infant Joash, escaped, saved by an aunt who hid him and his nurse from the cruel queen mother. Six years later this child was proclaimed king in the Temple courts by Jehoiada, the high priest. Athaliah was slain, and a new era began in Judah with the destruction of Baal worship and the repair of Jehovah's Temple.