In the mean time, Don John de Castro was rigging out a fleet, with design to possess himself of Aden, one of the strongest towns of Arabia Felix, and situated at the foot of a high mountain, which reached even to the sea by a narrow tongue of earth. This port is of great importance to shut up the passage of the Indies to the Turks and Saracens, who go thither by the Red Sea; and from this consideration it was, that Albuquerque the Great endeavoured to have mastered it in the year 15_13_, but the vigorous resistance of the Achenois forced him to forsake the siege. After that time, they were desirous, of their own accord, to have delivered it up to the Portuguese, thereby to free themselves from the tyranny of the Turks. Yet it was not then done, through the fault of a captain called Soarez, who, having no orders to take possession of the town, was so weak a politician as to refuse it when it was offered to the crown of Portugal. That people, whom the Turk used worse than ever, testified the same inclination under the government of Castro; and it was on that occasion that he sent a fleet towards the Strait of Mecca, under the command of his son Alvarez de Castro. Eight foysts of Goa, full of soldiers, set out for the expedition of Aden. Amongst these there was one very brave fellow, renowned for his military actions, but blackened with all sorts of crimes, and more infamous by his debauched manners, than known by his valour. He seemed a kind of savage beast, who had no more of man in him than the bare figure, nor any thing of a Christian besides the name. Above eighteen years he had abstained from confession; and that he once presented himself to the bishop of Goa, was less to reconcile himself to God, than to take off the imputation of being either a Mahometan or an idolater. Father Xavier had cast an eye upon this wretch, and waited only an opportunity to labour in so difficult a conversion. Understanding that this soldier was embarking on one of the foysts, which were going to join the fleet, he went out of the college of St Paul, at the first notice of it, taking nothing with him besides his breviary, and entered into the same vessel. It was believed by those who saw the Father, that he had orders from the viceroy to accompany his son Alvarez; and every one was glad of it, excepting only he, for whose sake he came. He drew near the soldier, and when they had weighed anchor, began to make acquaintance with him, and grew familiar to that degree, that the rest of the soldiers, who were less debauched, could not sufficiently admire it; and some of them said of Xavier, what a Pharisee said formerly of our Lord, "If this man were indeed a prophet, he would discern what manner of man he was, in whom he takes so much delight."