Therion (thēríon) (Greek: θηρίον, beast) is a deity found in the mystical system of Thelema, which was established in 1904 with Aleister Crowley's writing of The Book of the Law.
Therion, as a Thelemic godform, evolved from that of "The Beast" from the Book of Revelation, whom Crowley identified himself with since childhood, because his mother called him that name.
Aleister Crowley believed that the references to The Beast and the Scarlet Woman (Babalon) in the book “do not denote persons but are titles of office”.
It is the sum of the numbers inside the 6-by-6 magic square, which is associated with the sun by some Kabbalists, astrologists, and numerologists.
[8][9] Lon Milo DuQuette has written that the Hebrew letter shin (ש), which is written at the beginning and end of the Hebrew word for 'sun' (shemesh), conceals in itself the number of The Beast, because its shape is like three vavs (ו) conjoined together, whose gematrical value is 6.