In ancient Greece, the Eleusinian Mysteries were annual ceremonies conducted in the city of Eleusis, near Athens. They were associated with the cult of Demeter, the agricultural deity, and Persephone, also known as Kore. The mysteries represented the myth of Hades, the god of the underworld, abducting Persephone and her mother Demeter’s quest for her.
Thelema is a spiritual and philosophical system established in the early 20th century by Aleister Crowley. It derives from a variety of sources, including ceremonial magic, Hermeticism, Gnosticism, and the Kabbalah, among others. The primary text of Thelema is “The Book of the Law,” which Crowley claimed to have received in 1904 from the spiritual entity Aiwass.