Salt is also known to be a preservative. In the past, meat was preserved in this manner when there was no refrigeration. The LORD has "preserved" us in His salvation. Therein we are to be the "salt of the earth" bringing His savory message to the lost.
Salt is also known to be what happened to Lot's wife when she disobeyed the LORD and looked back at the destruction of Sodom and Gomorrah. She became a pillar of salt. (Genesis 19:26)
