MELACH SALT מֶ֫לַח
Throughout the ages, wars have actually been fought over salt. It was once a valuable commodity, and it has been used as a currency for trading. In fact, soldiers in the Roman army were sometimes paid with salt instead of money. The English word "salary" comes from the word salt.
The Hebrew word melah, meaning salt, and the word milhama, meaning war are similar. The latter comes from the root laham, which means to wage war or to eat.
Salt, like fire, kills impurities and stops decay. Salt separates what should not be (deceit, addiction), and it keeps together, or preserves, what is supposed to be (true, healthy, holy). Without salt, we would actually die because the human body can't make sodium, but our nerves and muscles do not work without it.
Salt is essential.
We actually need salt just as much as we need water.
Now think about this, if you get a leech on your toe and it tries to suck the life from you, you can just apply salt and that sucker will detach. When I was a little girl, it was salt that my dad applied to my toe when I discovered an unwanted intruder after swimming. And yes, it sounded like war as I screamed to high heaven, but the screaming didn't do any good. It was the salt that made the difference.
Applying the Word of God is like applying salt.
Digest the Word and the Word goes to war for you. Jesus is the Word. When Jesus says: "You are the salt of the earth," He is not just saying you are a fine condiment (see Matthew 5:13). In Christ, you are the salt and light of the earth.
God even made covenants with salt. Perhaps He wanted to show how important the covenants were by preserving them, and that takes salt. Many years ago, when salt was more of a precious mineral, when two travelers came into agreement on something, they'd seal the agreement with an exchange of salt. A covenant is a two way agreement and it can be found throughout scripture: "Should you not know that the LORD God of Israel gave the dominion over Israel to David forever, to him and his sons, by a covenant of salt?" 2 Chronicles 13:5
"All the heave offerings of the holy things, which the children of Israel offer to the LORD, I have given to you and your sons and daughters with you as an ordinance forever; it is a covenant of salt forever before the LORD with you and your descendants with you." Numbers 18:19
Let's kick up this justice movement in a two-way agreement with God who tells us we are salt so that we can bring change and make a difference in the lives of our families, our cities and our ministries. When we speak the Word of God, we can know rest and victory. When we apply salt we'll see preservation for that which is good, but also, a taking away of what must go.
War takes salt.