The Ecclesia Gnostica Catholica (EGC) is the ecclesiastic arm of OTO, its primary goal being the administration of sacraments and continuation of the Gnostic Tradition by celebrating both it and the OTO's central ceremony, the Gnostic Mass. Our Encampment celebrates the Gnostic Mass several times a month and the public is invited to attend. While first-time congregants are not expected to know the following, familiarity with the following is encouraged: The Gnostic Mass, The Anthem, and The Creed of the Thelemites. A sun-spring of information on the EGC and its ceremonies can be studied in the writings of Bishop T Polyphilus and Bishop T Apiryon.