 From its inception, the Theosophical Kabbalah became permeated by terminology adapted from philosophy and given new mystical meanings, such as its early integration with the Neoplatonism of Ibn Gabirol and use of Aristotelian terms of Form over Matter.Pinchas Giller and Adin Steinsaltz write that Kabbalah is best described as the inner part of traditional Jewish religion, the official metaphysics of Judaism, that was essential to normative Judaism until fairly recently.With the decline of Jewish life in medieval Spain, it displaced rationalist Jewish philosophy until the modern rise of Haskalah enlightenment, receiving a revival in our postmodern age.