What is Kabbalah?
Kabbalah is the study of Jewish mysticism. Kabbalah is an esoteric system (that just means it requires knowledge that is restricted to a small spiritual group) of interpretation of the Scriptures based upon a tradition claimed to have been handed down orally from Abraham. Despite that claimed antiquity, the system appears to have been given its earliest formulation in the 11th century in France and from there spread most notably to Spain.