The pope, however, had not abandoned the project of the crusade, and still entertained the hope of reviving the ardour and zeal of the Christian warriors by his exhortations. He convoked an assembly at Spoleto, at which Frederick, with the patriarchs of Constantinople, Antioch, and Jerusalem assisted. It was resolved in this assembly, to renew the war in Palestine, notwithstanding the truce concluded with the sultan of Cairo.

Gregory was impatient to accomplish his designs, and proclaim the laws of the Church in the rich countries of the East; and, to employ the time till warriors could be gathered together, he sent several missionaries across the sea, armed with the sword and the word, to endeavour to convert the infidels of Syria and Egypt. The sovereign pontiff was so persuaded of the success of this pacific crusade, that he wrote to the caliph of Bagdad, the sultan of Damascus, and the principal Mussulman chiefs, to exhort them to embrace Christianity.[240] History does not say what the fate was of these mendicant preachers in the East; but the caliph of Bagdad and the Mussulman princes did not cease to be inveterate enemies to the Christians. Gregory IX. was better inspired and more fortunate when he sent sacred orators into several of the provinces of the West, to appease the troubles and civil wars that were so injurious to the cause of religion, and diverted the minds of the people from the great enterprise of the holy wars.

The disciples of St. Dominick and St. Francis of Assisi, charged with a mission worthy of the Gospel, pervaded cities and countries, preaching peace and concord. Among the preachers thus sent to pacify states, Brother John of Vicentia made himself conspicuous by the miracles effected by his eloquence.[241] In all the countries he visited, the nobles, the peasants, the citizens, and the warriors flocked to listen to him, and swore to pardon all injuries and terminate all quarrels. After having re-established peace in several cities troubled by the spirit of jealousy, and animated by the stormy passions of undefined, ill-understood liberty, he announced that he should preach in the plain of Peschiera, on the banks of the Adige. All the inhabitants of the neighbouring cities, headed by their clergy and their magistrates, repaired to the place appointed, to listen to the Angel of Concord[242] and the orator of public peace. In the presence of more than four hundred thousand auditors, Brother John mounted a pulpit elevated in the centre of the plain of Peschiera; a profound silence prevailed throughout the assembly; every eye was fixed upon the holy preacher; his words seemed to descend from heaven. He took for his text these words of the Scripture: “I give you my peace, I leave you my peace.” After having drawn a frightful picture of the evils of war and the effects of discord, he ordered the Lombard cities to renounce their enmities, and dictated to them, in the name of the Church, a treaty of universal pacification. At no period had the middle ages presented a more sublime and touching spectacle; the historian of that time, who has nothing but troubles and wars to describe, ought to be delighted at an opportunity to tell of such an imposing and solemn scene, wherein religion recalled assembled nations to a sense of all that her maxims contain that is most consoling and salutary. The discourse of Brother John filled his auditory with a holy love of peace, and the cities then at war swore, before him, to forget for ever the subjects of their long divisions and eternal rivalries.

These evangelical discourses restored to Italy a few days of peace, and gave the Holy See an opportunity of preaching a new crusade with success. Gregory addressed pastoral instructions to all the bishops and prelates of Christendom. In his letters to the French bishops, he applied these words of Christ to the holy war: “If any one would come with me, let him renounce himself, let him take up my cross and follow me.” The sovereign pontiff declared all who would not employ their utmost efforts to conquer the heritage of Christ, guilty of treason. The circulars of the pope ordered all the faithful, of both sexes, to pay a denier per week towards the expenses of the crusade. The head of the Church compared these alms to those which St. Paul solicited for the poor of Jerusalem, and did not fear to assert, beforehand, that they would suffice for the maintenance of the army of Crusaders for ten years.

The preaching of this crusade was confided to the fraternities of St. Dominick and St. Francis, which had, in Asia, missionaries for the conversion of infidels, and in the West, preachers to re-establish peace among Christians; the new apostles of the holy war received from the pope the power, not only to give the cross, but to commute the vow of pilgrimage to a pecuniary alms, a practice that had never been seen since the beginning of the crusades; they had likewise the faculty of granting indulgences for several days to all who came to listen to their sermons. According to the spirit of their institutions, the disciples of St. Francis and St. Dominick lived amidst austerities and penance; they devoted themselves to poverty, and were bound to furnish a constant example of Christian humility; but, in this instance, the pope desired they should be received into monasteries and cities with pomp and ceremony; and that the clergy should come out to meet them, with the banners and most splendid ornaments of their churches. Whether this magnificence changed the simplicity of their manners, or that the people did not like to behold men whom they had lately seen devoted to evangelical poverty, treated with ceremonial pomp, the preachers of the crusade inspired their auditors with neither esteem nor respect, and the crowd diminished every day. As they received abundant alms, of which no one could see the employment, neither the solemnity of their mission nor the sanctity of their characters could screen them from the suspicions and accusations of the multitude: the murmurs and complaints which arose on all sides, at length weakened the authority of their words, and assisted in cooling the zeal and devotion of the Christians for the holy war.

The enthusiasm of the people, which Christian eloquence could not revive, stood in need of the example of the most illustrious princes and warriors. France was then at peace; the war against the Albigeois was drawing towards its end: most of the knights and barons, reared amidst battles, could not endure rest, and sighed for an opportunity of signalizing their warlike temperament. They took the oath to go into Asia and fight against the Saracens.

Thibault V., count of Champagne, and king of Navarre, son of Thibault, who died before the fifth crusade, undertook to discharge the vow his father had made to the Church and to Christ. The king of Navarre was celebrated among knights and among troubadours; his muse, which had sung profane loves, now gave voice to the complaints of Jerusalem, and awakened, by Christian songs, the ardour of the soldiers of the cross. “Learn,” said he, “that heaven is closed to all those who will not cross the seas to visit and defend the tomb of God. Yes, all the brave, all who love God and glory, will not hesitate to take up the cross and arms. Those who prefer repose to honour, those who dread perils, will remain alone in their homes. Jesus Christ, in the day of judgment, will say to the one party: ‘You, who helped me to bear my cross, go to the place in which dwell the angels and my mother Mary;’ he will say to the others: ‘You, who have not succoured me, descend to the abode of the wicked.’”[243] The example and the exhortations of Thibault attracted princes, barons, and knights from all the provinces of France.

Pierre de Dreux, duke of Brittany, whom the clergy surnamed Mauclerc, because, in his youth, he had abandoned the ecclesiastical state, wished to expiate his numerous felonies, his unjust wars, his tyranny towards his subjects, his perfidies towards his allies, by the holy pilgrimage. Hugh IV., duke of Burgundy, the counts of Bar, Ferez, Mâcon, Joigny, Sancoure, and Nevers; Simon de Montfort, Andrew de Vitri, Amaury fils, Geoffrey d’Ancenes, and a crowd of barons and knights took the cross, and engaged to follow the duke of Brittany and the king of Navarre into Palestine.

As the preaching of the crusade had been accompanied by several abuses that might prove injurious to the success of the holy expedition, a council assembled at Tours, employed itself in remedying and stopping the evil at its source. We have seen, on preceding occasions, that preachers of the crusades, by receiving criminals under the banners of the cross, had scandalized Christian knights; and crusades, as was seen in the twelfth century, were not considered as a means of salvation for the faithful, and as the way of the Lord, in which all the world might enter. Great criminals no longer found a place in the ranks of the pious defenders of Christ. The council of Tours decided that Crusaders, arrested by justice, should be transferred to the hands of an ecclesiastical judge, who would pay no respect to their privileges, and should even take the cross from them, if he found them guilty of homicide or any other great crime committed against divine and human laws.

As in other crusades, the people were led into violent excesses against the Jews, whom they accused of having immolated the God for whom they were going to fight, and who retained immense treasures in their hands, whilst the Crusaders were obliged to pledge their property to perform the voyage to Palestine. In order to stop the course of these popular violences, the council forbade any ill-treatment of the Jews, either by plundering them of their wealth or by doing them personal injury, under pain of heavy ecclesiastical censures.