TRUE ALCHEMY: REBIS alchemical representation, that is, the 2 substances, Sulfur and Mercury, and 100% married together on Earth, which are becoming ONE, the Rebis. This marriage is binding in the True Alchemy. With time and effort, the alchemist become divine the Philosopher's Stone. Sulphur is the SOL. Mercury is the MOON. The Rebis is the advanced Union two of them, on the earth, where they die.