The Cabal is of two kinds, theoretical and practical, with the practical Cabala, which is engaged in the construction of talismans and amulets, we have nothing to do. The theoretical is divided into the lineal and dogmatic. The dogmatic is nothing more than the summary of the metaphysical doctrine taught by the Cabalist doctors. It is, in other words, the system of the Jewish philosophy.
Albert MackeyThe Kassideans or Assideans...arose either during the Captivity or soon after the restoration...The Essenians were, however, undoubtedly connected with the Temple (of Solomon), as their origin is derived by the learned Scalier, with every appearance of truth, from the Kassideans, a fraternity of Jewish devotees, who, in the language of Laurie, had associated together as 'Knights of the Temple of Jerusalem.'...From the Essenians Pythagoras derived much, if not all, of the knowledge and the ceremonies with which he clothed the esoteric school of his philosophy.
Albert Mackey