The unedited full-text of the 1906 Jewish Encyclopedia
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One of the earliest cabalists. According to an account which is not altogether trustworthy, he was the real founder of cabalistic science; its secrets are said to have been revealed to him in a vision by the prophet Elijah. These Isaac transmitted to Jacob Nazir, who taught them to Abraham b. David, the latter in turn entrusting them to his son Isaac the Blind.

  • Azulai, Shem ha-Gedolim, s.v. RABaD the Second.
J. J. Z. L.
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