You must understand, by the allusion to "God's will," that leprosy was in the Middle Ages really considered to be a punishment from heaven--so that in taking a leper into his castle, the good friend was not only offending against the law of the land, but risking celestial punishment as well, according to the notions of that age. His charity, therefore, was true charity indeed, and his friendship without fear. But it was going to be put to a test more terrible than any ever endured before. To comprehend what followed, you must know that there was one horrible superstition of the Middle Ages--the belief that by bathing in human blood the disease of leprosy might be cured. Murders were often committed under the influence of that superstition. I believe you will remember that the "Golden Legend" of Longfellow is founded upon a mediæval story in which a young girl voluntarily offers up her life in order that her blood may cure the leprosy of her king. In the present romance there is much more tragedy. One night while sleeping in his friend's castle, the leper was awakened by an angel from God--Raphael--who said to him: "I am Raphael, the angel of the Lord, and I am come to tell thee how thou mayst be healed. Thou shalt bid Amile thy comrade that he slay his two children and wash thee in their blood, and so thy body shall be made whole." And Amis said to him, "Let not this thing be, that my comrade should become a murderer for my sake." But the angel said, "It is convenient that he do this." And thereupon the angel departed. The phrase, "it is convenient," must be understood as meaning, "it is ordered." For the mediæval lord used such gentle expressions when issuing his commands; and the angel talked like a feudal messenger. But in spite of the command, the sick man does not tell his friend about the angel's visit, until Amile, who has overheard the voice, forces him to acknowledge whom he had been talking with during the night. And the emotion of the lord may be imagined, though he utters it only in the following gentle words--"I would have given to thee my man servants and my maid servants and all my goods--and thou feignest that an angel hath spoken to thee that I should slay my two children. But I conjure thee by the faith which there is between me and thee and by our comradeship, and by the baptism we received together, that thou tell me whether it was man or angel said that to thee." Amis declares that it was really an angel, and Amile never thinks of doubting his friend's word. It would be a pity to tell you the sequel in my own words; let me quote again from the text, translated by Walter Pater. I think you will find it beautiful and touching: