Magic & the Supernatural
In the Middle Ages, Ibn Ezra, Maimonides, and others debated the legitimacy of astrology.
Complex systems of letter and number substitution yield names for God that have been used for magical and supernatural ends.
Throughout history, Jews have been suspicious of manticism and clairvoyance, while still practicing many diviner's arts.
Throughout much of Jewish history, witchcraft has been viewed as a vice that virtually every woman will indulge in.
Some traditional Jewish sources indicate belief in the efficacy of spells.
The Jewish numerology tradition, known as gematria, values some numbers more than others.