Sulfur

Sulfer, or sulphur (Sanskrit, sulvere; Latin sulpur) was known in ancient times, and is referred to in the Biblical Pentateuch (Genesis). The word itself is almost certainly from the Arabic sufra meaning yellow, from the bright color of the naturally occurring form. At room temperature, sulfur is a soft bright yellow solid. It burns with a blue flame that emits sulfur dioxide, notable for its peculiar suffocating odor.

English translations of the Bible commonly refer to sulfur as "brimstone," giving rise to the name of 'Fire and brimstone' sermons. It is from this part of the Bible that hell is implied to 'smell of sulfur' (similar to rotten eggs or burnt matches).

Early alchemists gave sulfur its own alchemical symbol, which was a triangle at the top of a cross.

Uses for sulfur are: purification, to cleanse a space and drive away negative influences.

By putting sulfur powder inside of your shoes, the larvae of the Astral Body (incubi, succubi, basilisks, dragons, phantoms, etc.) are destroyed. Sulfur originates invisible vapors that rise in order to disintegrate these types of larvae. Malignant forms of thoughts and larvae enclosed within any room are disintegrated when one burns sulfur upon a flaming piece of charcoal. - From "The Esoteric Course of Kabbalah."

Note: When working with sulfur use caution. Once you put the sulfur on the charcoal, you (and anybody else, including pets) should leave the room. Close the door behind you and wait for the smell of the sulfur to dissipate. The burning of sulfur can make it difficult to breathe.