 Many core Gnostic ideas reappear in Kabbalah, where they are used for dramatically reinterpreting earlier Jewish sources according to this new system.The Kabbalists originated in 13th-century Provence, which was at that time also the center of the Gnostic Cathars.While some scholars in the middle of the 20th century tried to assume an influence between the Cathar "gnostics" and the origins of the Kabbalah, this assumption has proved to be an incorrect generalization not substantiated by any original texts.