It is impossible, says William of Tyre, to describe all the species of persecutions to which the Christians were then exposed. Among the instances of barbarity cited by the historians, there is one which gave to Tasso the idea of his affecting episode of Olindus and Sophronia. One of the bitterest enemies of the Christians, in order to increase the hatred of their persecutors, threw, in the night, a dead dog into one of the principal mosques of the city. The first who repaired thither to morning prayer were seized with horror at the sight of this profanation, and proclaimed their anger aloud. Threatening clamours soon resounded in every part of the city; the crowd assembled in a state of tumultuous excitement around the mosque; the Christians were at once accused of this act of sacrilege, and all swore to wash out the outrage to their prophet in the blood of the perpetrators. All Christians were about to be immolated to the revenge of the Mussulmans, and already were they prepared for death, when a young man, whose name history has not preserved, presented himself in the midst of them. “The greatest misfortune that could happen,” said he, “would be that the church of Jerusalem should perish. When a people is threatened with destruction, it is just that a single man should sacrifice himself for the salvation of all; I here and now offer myself as a victim to die for you; to you I leave the charge of doing justice to my memory, and I recommend myself to your prayers.” After pronouncing these words, which dissolved the assembly in tears, he quitted them, and repaired to the chiefs of the Mussulmans; he declared himself alone to be the author of the crime imputed to the Christians, and invoked upon himself the death with which his brethren were menaced. The Mussulmans, without being in the least touched by his generous devotion, were satisfied with the victim who offered himself to their vengeance: the sword was no longer suspended over the heads of the Christians, and he who had immolated himself for their safety, went, according to the expression of William of Tyre,[21] to receive in heaven the reward reserved for those whose minds burn with a love of perfect charity.