Shishak had no need of Israelitish alliances. On the contrary, Solomon was connected by marriage with the dethroned dynasty, and the power of Israel, if unchecked, was a menace to his own kingdom. But while Solomon lived he was afraid to move. He kept at his court, however, an Israelitish rebel, who might prove useful when the time came. Hardly was Solomon dead when Jeroboam returned to his native country, and the kingdom of David was sundered in twain. Shishak seized the opportunity of striking a blow at what remained of it. With contemptuous impartiality he overran the territories of both Judah and the revolted tribes, but it was Judah which suffered the most. The unfinished fortifications of Jerusalem were stormed, the treasures accumulated by Solomon carried to the Nile, and the King of Judah compelled to acknowledge himself the vassal of Shishak. Judah never recovered from the blow: had it not been for the Egyptian invasion, and the consequent loss of its hoarded wealth, it might have been able to suppress the rebellion of Jeroboam, and to reduce all the tribes of Israel once more under one sceptre. The names of the captured cities of Palestine are still to be read on the walls of the temple of Karnak. Shishak's successors of the Twenty-second dynasty did not inherit his military vigour and skill. The central authority grew gradually weaker, and Egypt again fell back into the condition from which he had rescued it. The tribes of the Sûdan could no longer be hindered from attacking the enfeebled land, and Ethiopian princes made their way to Memphis, carrying back with them to their capital of Napata the spoil and tribute of a defeated and disunited people. At last the Ethiopian raids changed into permanent conquest, and a negro dynasty--the Twenty-fifth--sat on the throne of Menes.