Salt: The Universal Purifier

Salt is the symbol of permeance and incorruptibility. The word "salvation" originates from the use of salt, and is still used in sabbath rituals.

Leviticus 2:13
"And every oblation of thy meat offering shalt not season with salt; neither shalt thou suffer the salt of the covenant of thy God to be lacking from thy meat offering: with all thine offerings thou shalt offer salt."

• Spilled salt should never be picked up, the bad luck is balanced by throwing salt over the shoulder at the demons who appear because of the spill.
  
• Buddhist tradition holds that salt repels all evil spirit.
  
• Throw salt over your shoulder before entering your home after a funeral - this will prevent spirits clinging from the funeral from entering your home.
  
• A line of salt is a barrier, no spirit can cross. Mediums use lines to constrain movements of summoned spirits.
  
• Salt the Earth after a battle and nothing will grow, and no one will live there. Salt can also be reversed to be a symbol of barrenness.