Curse of Ham depravity, is the first intimation of the theme of the corruption of the Canaanites, which is given as the justification for their being dispossessed of their land and for the transfer of that land to the descendants of Abraham." The majority of commentators, both ancient and modern, have felt that Ham's seeing his father naked was not a sufficiently serious crime to explain the punishment that follows. Nevertheless, Genesis 9:23, in which Shem and Japheth cover Noah with a cloak while averting their eyes, suggests that the words are to be taken literally, and it has recently been pointed out
Shem-Tob ben Isaac of Tortosa the four seasons of the year. According to the superstitions of his time, he believed in the influence of the planets on man; and accordingly an entire treatise deals with astrology. His translation was undertaken with the view of spreading medical science among the Jews, so that they might not be dependent on Christian physicians (comp. 'Ab. Zarah ii.2). The translation is not literal; and in this Shem-Ṭob departed from the method of the earlier translators. As to the various names of diseases and medicaments, Shem-Ṭob employs all that he could find in the Bible and in Talmudic literature. Others