Long ago, in the city of Ashkelon, the people were plagued by a coven of eighty witches who lived in a cave at the outskirts of the city. Those witches were sworn enemies of the people of Ashkelon, and saw to it that spells were cast that brought harm to them in ways large and small. Not only did they play nasty tricks, such as turning wine into vinegar, or causing the fire to go out, but they also brought about grave dangers, casting spells which kept the rain from falling, and causing the cows to go dry. And sometimes the vengeance of the witches was directed at one person, as when they caused a rabbi to become a bird, and his wife, a butterfly. Now it happened that there were three witnesses to this foul deed, the three children of the unfortunate couple. They had seen the witches approach their parents and strike them with their magic wands, transforming their father into a bird and their mother into a butterfly, both of which had flown away and not been seen again. And after this ...