After his coronation, Baldwin wrote to the pope, to announce to him the extraordinary victories by which it had pleased God to crown the zeal of the soldiers of the cross. The new emperor, who assumed the title of knight of the Holy See, recalled to the mind of the sovereign pontiff the perfidies and the long revolt of the Greeks. “We have brought under your laws,” said he, “that city, which, in hatred for the Holy See, would scarcely hear the name of the prince of the apostles, and did not afford a single church to him who received from the Lord the supremacy over all churches.” Baldwin, in his letter, invited the vicar of Jesus Christ to imitate the example of his predecessors, John, Agapetus, and Leo, who visited in person the Church of Byzantium. To complete the justification of the pilgrims who had made themselves masters of the Greek empire, the emperor invoked the testimony of all the Christians of the East. “When we entered into this capital,” added he, “many inhabitants of the Holy Land, who were there, expressed greater joy than any others, and asserted aloud that we had rendered God a more agreeable service than if we had retaken Jerusalem.”

The marquis of Montferrat at the same time addressed a letter to the sovereign pontiff, in which he protested his humble obedience to all the decisions of the Holy See. “As for me,” said the king of Thessalonica, “who only took up the cross for the expiation of my sins, and not to obtain an opportunity of sinning with more license under the pretext of religion, I submit myself blindly to your will. If you judge that my presence in Romania may be useful, I will die there, contending against your enemies and those of Christ: if you think, on the contrary, I ought to abandon these rich countries, pay no regard to the wealth or dignities I possess there, I am ready to return to the West; for I am not willing to do anything that will draw upon me the anger of the sovereign judge.”

The doge of Venice, who till that time had braved with so much haughtiness the threats and thunders of the Church, acknowledged the sovereign authority of the pope, and joined his protestations with those of Baldwin and Boniface. To disarm the anger of Innocent, they represented to him that the conquest of Constantinople had prepared the deliverance of Jerusalem, and boasted of the wealth of a country which the Crusaders had at length brought under the laws of the Holy See. In all their letters to the pope or the faithful of the West, the conquerors of Byzantium spoke of the Greek empire as of a new land of promise, which awaited the servants of God and the soldiers of Christ.

Innocent had been for a long time irritated by the disobedience of the Crusaders; in his reply, he reproached with bitterness the victorious army of the Latins for having preferred the riches of the earth to those of heaven;[149] he reprimanded the leaders for having exposed to the outrages of the soldiers and followers of the army, the honour of matrons and maidens, and virgins consecrated to the Lord; for having ruined Constantinople, plundered both great and small, violated the sanctuary, and put forth a sacrilegious hand upon the treasures of the churches. Nevertheless, the father of the faithful would not take upon him to fathom the judgments of God; he was satisfied to believe that the Greeks had been justly punished for their faults, and that the Crusaders were recompensed as the instruments of Providence, as the avengers of divine justice. “Dread,” said he, “the anger of the Lord; hope with fear that he will pardon the past, if you govern the nations with equity; if you are faithful to the Holy See, and, above everything, if you entertain a firm resolution to accomplish your vow for the deliverance of the Holy Land.”

Notwithstanding this outward show of anger, the sovereign pontiff was gratified to the depths of his heart by the prayers and submission of the heroes and princes whose exploits made the Eastern world tremble. Cardinal Peter of Capua had given absolution to the Venetians excommunicated after the siege of Zara. Innocent at first blamed the indulgence of his legate, but finished by confirming the pardon granted to Dandolo and his compatriots. The pope approved the election of Baldwin, who took the title of knight of the Holy See, and consented to recognise an empire to which he was to give laws. The more submissive the Crusaders showed themselves to his authority, the more plainly it appeared to him that their conquests must concern the glory of God and that of the vicar of Christ upon earth. He wrote to the bishops of France, that God had been willing to console the Church by the conversion of heretics; that Providence had humbled the Greeks, an impious, proud, and rebellious people; and again placed the empire in the hands of the Latins, a pious, humble, and submissive nation. The sovereign pontiff invited, in the name of the emperor Baldwin, the French of both sexes and all conditions, to repair to Greece to receive lands and riches proportioned to their merit and their quality. He promised the indulgences of the crusade to all the faithful, who, sharing the glory of the Crusaders, should go to defend and promote the prosperity of the new empire of the East.

The pope did not, however, lose sight of the Syrian expedition, and appeared persuaded that succours sent to Constantinople must contribute to the deliverance of the holy places. The king of Jerusalem implored more earnestly than ever, both by letters and ambassadors, the effective protection of the Holy See, as well as that of the princes of the East.

The new emperor of Byzantium did not renounce the hope of assisting the Christian colonies of Syria; and to raise the courage of his brethren of the Holy Land, he sent to Ptolemaïs the chain of the port and the gates of Constantinople. When these trophies reached Palestine, scarcity, famine, and all the evils of an unfortunate war ravaged both cities and plains. At the news of approaching aid, the people of Ptolemaïs passed at once from excessive grief and despondency to all the transports of joy. Fame, whilst publishing the miraculous conquests of the companions of Baldwin and Boniface, carried the hope of safety into all the Christian cities of Syria, and spread terror among the Mussulmans. The sultan of Damascus had recently concluded a truce with the Christians, and trembled lest it should be broken, when, all at once, he owed his safety to the very event that had caused his alarms.

The greater part of the defenders of the Holy Land, who had experienced nothing but the evils of war, became desirous of partaking of the glory and the good fortune of the French and Venetians. They even who had quitted the victorious army at Zara, who had so severely blamed the expedition to Constantinople, believed that the will of God called them to the shores of the Bosphorus, and they abandoned the Holy Land. The legate of the pope, Peter of Capua, was drawn away by the example of the other Crusaders, and went to animate with his presence the zeal of the Latin clergy, who were labouring for the conversion of the Greeks; the knights of St. John and the Temple also directed their course towards Greece, where glory and rich domains were the reward of valour; and the king of Jerusalem was left almost alone at Ptolemaïs, without means of making the truce he had entered into with the infidels respected.