The deputies were directed to congratulate Isaac, if he had recovered his throne, and to require of him the ratification of the treaty made with his son. On arriving in Constantinople, they were conducted to the palace of Blachernæ between two ranks of soldiers, who, the day before, had formed the body-guard of Alexius, and who had just taken the oath to defend Isaac. The emperor received the deputies on a throne sparkling with gold and precious stones, and surrounded by all the splendour of Eastern courts. “This is the manner,” said Villehardouin, addressing Isaac, “in which the Crusaders have fulfilled their promises; it now remains with you to perform those that have been made in your name. Your son, who is with the lords and barons, implores you to ratify the treaty he has concluded, and commands us to say that he will not return to your palace until you have sworn to perform all he has promised us.” Alexius had engaged to pay the Crusaders two hundred thousand silver marks, to furnish their army with provisions for a year, to take an active part in the perils and labours of the holy war, and to reduce the Greek Church to submission to that of Rome. When Isaac heard the conditions of the treaty, he could not forbear from expressing his surprise, and pointing out to the deputies how difficult it must be to perform such promises; but he could deny nothing to his liberators, and thanked the Crusaders for not requiring more:[105] “_You have served us so well_,” added he, “_that if we were even to give you the whole empire, you would have merited it_.” The deputies praised the frankness and good faith of Isaac, and carried back to the camp the imperial patents, to which was affixed the seal of gold that confirmed the treaty made with Alexius.