“Sion; As in Mt. Sion or Priory de Sion. This is a common term in Christianity and Judaism, yet few know really to what it refers. It refers to the Royal (Holy) family of Egypt, the four principle gods upon which the Pharaoh founds his dynasty. The gods are Set, Isis, Osiris and Nephthys. The first letters of their names make the word S.I.O.N. The numerology of these letters is, same as ROSE ( ), which is why the rose is used often on occult circles and used as a symbol of royalty.”

Source: Astro-Theology Etymology and Sidereal Mythology Tarot Astronomy