Note Note 3 — NOTES TO CHAPTER 17.
Reading edition
3. Salt of the Earth.—Dummelow's Commentary, on Matt. 5:13, states: "Salt in Palestine, being gathered in an impure state, often undergoes chemical changes by which its flavor is destroyed while its appearance remains." Perhaps a reasonable interpretation of the expression, "if the salt have lost his savor," may be suggested by the fact that salt mixed with insoluble impurities may be dissolved out by moisture, leaving the insoluble residue but slightly salty. The lesson of the Lord's illustration is that spoiled salt is of no use as a preservative. The corresponding passage in the sermon delivered by Jesus to the Nephites after His resurrection reads: "Verily, verily, I say unto you, I give unto you to be the salt of the earth; but if the salt shall lose its savor, wherewith shall the earth be salted? The salt shall be thenceforth good for nothing, but to be cast out, and to be trodden under foot of men." (3 Nephi 12:13.)