1370–1500. During the fourteenth and fifteenth centuries the Kabbalah took deep root in Spain. Its followers, who were chiefly occupied with the study of the Sohar, with editing some older works, and with writing Kabbalistic commentaries on the Bible, became more and more aggressive, denouncing in unmeasured terms their co-religionists who could not see the advantages of this secret doctrine. Thus Abraham b. Isaac of Granada—who wrote (1391–1409) a Kabbalistic work entitled The Covenant of Peace, discussing the mysteries of the names of God and the angels, of permutations, commutations, the vowel points and accents—declares that he who does not acknowledge God in the manner of the Kabbalah sins unwittingly, is not regarded by God, has not his special providence, and, like the abandoned and the wicked, is left to fate. [96] Similar in import and tone are the writings of Shem Tob Ibn Shem Tob (died 1430). In his Treatise, entitled the Book of Faithfulness, which is an attack on the Jewish philosophers Ibn Ezra, Maimonides, Levi b. Gershon, &c., and a defence of the Kabbalah, Shem Tob denounces the students of philosophy as heretics, and maintains that the salvation of Israel depends upon the Kabbalah. He also wrote Homilies on the Pentateuch, the Feasts and Fasts, &c., in which the Kabbalistic doctrines are fully propounded. [97] Moses Botarel or Botarelo, also a Spaniard, wrote at this time (1409) his commentary on the famous Book Jetzira, an analysis of which is given in the foregoing part of this Essay (vide supra, p. 147, &c.) Unlike Abraham of Granada and Shem Tob, his two contemporary champions of the Kabbalah, he praises philosophy, speaks of Aristotle as of a prophet, and maintains that philosophy and the Kabbalah propound exactly the some doctrines, and that they only differ in language and in technical terms. In this commentary, which he wrote to instruct the Christian scholar Maestro Juan in the Kabbalah, Botarel shows how, by fasting, ablutions, prayer, invocation of divine and angelic names, a man may have such dreams as shall disclose to him the secrets of the future. In confirmation of his opinions he quotes such ancient authorities as Rab Ashi, Saadia Gaon, Hai Gaon, &c., whom the Kabbalah claims as its great pillars. [98] It is almost needless to remark that these men lived long before the birth of the Kabbalah, and that this mode of palming comparatively modern opinions upon great men of remote ages, has also been adopted by advocates of other systems who were anxious to invest their views with the halo of antiquity.