Guy of Lusignan soon showed himself unworthy of the charge, and Baldwin,[620] resuming the government, endeavoured to establish it in such a form that it might uphold itself after his death, which he felt to be approaching. With this view he offered the administration to the Count of Tripoli,[621] during the minority of his sister's child; but the Count refused to accept it, except under condition that the charge of the young prince should be given to Joscelyn de Courtenay, the surviving branch of the Courtenays of Edessa, and son of the unhappy count who died in a Saracen prison. He also stipulated that the castles and fortresses of the kingdom should be garrisoned by the Hospitallers and Templars; and that in case the boy should die in his youth, the question of succession should be determined by the Pope, the Emperor of Germany, the King of France, and the King of England.[622] Not many years after this the king died, and Baldwin V. succeeded, but his death followed immediately upon his accession. Without abiding by the dispositions of the former monarch, no sooner was the young king dead, than the Grand Master of the Temple, Renauld of Chatillon, Count of Karac, and the Patriarch of Jerusalem joined to raise Sybilla to the throne, in spite of the formal protest of all the other barons and the Grand Master of the Hospital. The gates of Jerusalem were shut;[623] and it was only by sending one of their followers, disguised as a monk, that the nobles assembled with the Count of Tripoli at Naplousa could gain any tidings of what passed. Sybilla was crowned in form; and then the patriarch, pointing to the other crown which lay upon the altar, told her that it was hers to dispose of, on which she immediately placed it on the head of Guy of Lusignan.[624] After this some of the barons refused to do homage to the new king, and some absented themselves from his court; but the imminent danger in which the country was placed at length brought back a degree of concord, when concord could no longer avail. Saladin had by this time made himself master of all Syria;[625] and had not only consolidated into one great monarchy dominions which for ages had been separated into petty states, but also, by the incessant application of a powerful and expansive mind, he had drawn forth and brought into action many latent but valuable resources which had previously been unknown or forgotten. He had taught the whole interests of his people to centre in his own person, and he now determined to direct their energies to one great and important enterprise. That enterprise was the conquest of Palestine, and with an army of fifty thousand horse, and near two hundred thousand foot, he advanced towards Jerusalem, and laid siege to Tiberias.[626] Within the walls of that fortress the Countess of Tripoli held out against the Saracens, while her husband joined Guy of Lusignan, and brought his forces to the field in defence of the Holy Land.