Summary: Leviticus said: ...with all thine offerings thou shalt offer salt.
A Well Seasoned Sacrifice
Levi 2:13 And every oblation of thy meat offering shalt thou 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.
Matt 5:13 (quickview)  Ye are the salt of the earth: but if the salt have lost his savour, wherewith shall it be salted? it is thenceforth good for nothing, but to be cast out, and to be trodden under foot of men.
"Salt lose it savour"
salt changes everything it comes in contact with
but salt, itself, remains unchanged
If salt loses its savour, what can salt this salt?
salt has savour
The Lord is said to enjoy a sacrifice with "savour"
Gene 8:20-21 And Noah builded an altar unto the LORD; and took of every clean beast, and of every clean fowl, and offered burnt offerings on the altar. And the LORD smelled a sweet savour; and the LORD said in his heart, I will not again curse the ground any more for man’s sake; for the imagination of man’s heart [is] evil from his youth; neither will I again smite any more every thing living, as I have done.
Exod 29:18 And thou shalt burn the whole ram upon the altar: it [is] a burnt offering unto the LORD: it [is] a sweet savour, an offering made by fire unto the LORD.
Ezek 20:41 I will accept you with your sweet savour, when I bring you out from the people, and gather you out of the countries wherein ye have been scattered; and I will be sanctified in you before the heathen.
...with all thine offerings thou shalt offer salt.
So we know these offerings had salt and that is what made them a sweet savour to God.
WHY DID SALT MAKE THEM A SWEET SAVOUR TO GOD?
a spice was involved in the sacrifice that made that sacrifice something special
salt is mentioned several times in the Bible
it is intended to represent something
2Kin 2:20-22 And he said, Bring me a new cruse, and put salt therein. And they brought [it] to him. And he went forth unto the spring of the waters, and cast the salt in there, and said, Thus saith the LORD, I have healed these waters; there shall not be from thence any more death or barren [land]. So the waters were healed unto this day, according to the saying of Elisha which he spake.
Salt was put in the cruse of oil - a cruse is a jar or bowl - a horn was used also for pouring ANOINTING OIL on a person
horns mean POWER because horns were removed from animals, who used them for their power
WITH SALT in the CRUSE OF ANOINTING OIL we see a picture
SALT IMPLIES PRESERVING
Waters were "HEALED UNTO THIS DAY"
"there shall not be from thence any more death or barren [land]."
salt is used to preserve
POWER (horn/cruse) combined with PERMANENCY (salt) makes permanent power
PERMANENT HEALING was shown in the healing of the waters with a cruse with salt in it
Numb 18:19 All the heave offerings of the holy things, which the children of Israel offer unto the LORD, have I given thee, and thy sons and thy daughters with thee, by a statute for ever: it [is] a covenant of salt for ever before the LORD unto thee and to thy seed with thee.