Matthew 5:13

13-16. We have here the practical application of the foregoing principles to those disciples who sat listening to them, and to their successors in all time. Our Lord, though He began by pronouncing certain characters to be blessed--without express reference to any of His hearers--does not close the beatitudes without intimating that such characters were in existence, and that already they were before Him. Accordingly, from characters He comes to persons possessing them, saying, "Blessed are ye when men shall revile you," &c. (Mt 5:11). And now, continuing this mode of direct personal address, He startles those humble, unknown men by pronouncing them the exalted benefactors of their whole species. Ye are the salt of the earth--to preserve it from corruption, to season its insipidity, to freshen and sweeten it. The value of salt for these purposes is abundantly referred to by classical writers as well as in Scripture; and hence its symbolical significance in the religious offerings as well of those without as of those within the pale of revealed religion. In Scripture, mankind, under the unrestrained workings of their own evil nature, are represented as entirely corrupt. Thus, before the flood (Ge 6:11, 12); after the flood (Ge 8:21); in the days of David (Psa 14:2, 3); in the days of Isaiah (Is 1:5, 6); and in the days of Paul (Ep 2:1-3; see also Job 14:4; 15:15, 16; Joh 3:6; compared with Ro 8:8; Tit 3:2, 3). The remedy for this, says our Lord here, is the active presence of His disciples among their fellows. The character and principles of Christians, brought into close contact with it, are designed to arrest the festering corruption of humanity and season its insipidity. But how, it may be asked, are Christians to do this office for their fellow men, if their righteousness only exasperate them, and recoil, in every form of persecution, upon themselves? The answer is: That is but the first and partial effect of their Christianity upon the world: though the great proportion would dislike and reject the truth, a small but noble band would receive and hold it fast; and in the struggle that would ensue, one and another even of the opposing party would come over to His ranks, and at length the Gospel would carry all before it. but if the salt have lost his savour--"become unsavory" or "insipid"; losing its saline or salting property. The meaning is: If that Christianity on which the health of the world depends, does in any age, region, or individual, exist only in name, or if it contain not those saving elements for want of which the world languishes, wherewith shall it be salted?--How shall the salting qualities be restored to it? (Compare Mr 9:50). Whether salt ever does lose its saline property--about which there is a difference of opinion--is a question of no moment here. The point of the case lies in the supposition--that if it should lose it, the consequence would be as here described. So with Christians. The question is not: Can, or do, the saints ever totally lose that grace which makes them a blessing to their fellow men? But, What is to be the issue of that Christianity which is found wanting in those elements which can alone stay the corruption and season the tastelessness of an all-pervading carnality? The restoration or non-restoration of grace, or true living Christianity, to those who have lost it, has, in our judgment, nothing at all to do here. The question is not, If a man lose his grace, how shall that grace be restored to him? but, Since living Christianity is the only "salt of the earth," if men lose that, what else can supply its place? What follows is the appalling answer to this question. it is thenceforth good for nothing, but to be cast out--a figurative expression of indignant exclusion from the kingdom of God (compare Mt 8:12; 22:13; Joh 6:37; 9:34). and to be trodden under foot of men--expressive of contempt and scorn. It is not the mere want of a certain character, but the want of it in those whose profession and appearance were fitted to beget expectation of finding it.

Robert Jamieson, A. R. Fausset & David Brown, 1871 · public domain

Verse 13. Ye are the salt of the earth. Salt renders food pleasant and palatable, and preserves from putrefaction. So Christians, by their lives and instructions, are to keep the world from entire moral corruption. By bringing down, by their prayers, the blessing of God, and by their influence and example, they save the world from universal vice and crime.

Salt have lost his savour. That is, if it has become insipid, tasteless, or have lost its preserving properties. The salt used in this country is a chemical compound--muriate of soda-- and if the saltness were lost, or it were to lose its savour, there would be nothing remaining. It enters into the very nature of the substance. In eastern countries, however, the salt used was impure, mingled with vegetable and earthy substances; so that it might lose the whole of its saltness, and a considerable quantity of earthy matter remain. This was good for nothing, except that it was used, as it is said, to place in paths, or walks, as we use gravel. This kind of salt is common still in that country. It is found in the earth in veins or layers, and when exposed to the sun and rain, loses its saltness entirely. Maundrell says,

"I broke a piece of it, of which that part that was exposed
to the rain, sun, and air, though it had the sparks and
particles of salt, yet it had perfectly lost its savour.
The inner part, which was connected to the rock, retained
its savour, as I found by proof."

(h) "salt of the earth" Mk 9:50

Albert Barnes, 1834 · public domain

Verse 13 Ye are the salt of the earth - Our Lord shows here what the preachers of the Gospel, and what all who profess to follow him, should be; the salt of the earth, to preserve the world from putrefaction and destruction. See the note on Lev 2:13. But if the salt have lost his savor - That this is possible in the land of Judea, we have proof from Mr. Maundrell, who, describing the Valley of Salt, speaks thus: "Along, on one side of the valley, toward Gibul, there is a small precipice about two men's lengths, occasioned by the continual taking away of the salt; and, in this, you may see how the veins of it lie. I broke a piece of it, of which that part that was exposed to the rain, sun, and air, though it had the sparks and particles of salt, Yet It Had Perfectly Lost Its Savour: the inner part, which was connected to the rock, retained its savor, as I found by proof." See his Trav., 5th edit., last page. A preacher, or private Christian, who has lost the life of Christ, and the witness of his Spirit, out of his soul, may be likened to this salt. He may have the sparks and glittering particles of true wisdom, but without its unction or comfort. Only that which is connected with the rock, the soul that is in union with Christ Jesus by the Holy Spirit, can preserve its savor, and be instrumental of good to others. To be trodden underfoot - There was a species of salt in Judea, which was generated at the lake Asphaltites, and hence called bituminous salt, easily rendered vapid, and of no other use but to be spread in a part of the temple, to prevent slipping in wet weather. This is probably what our Lord alludes to in this place. The existence of such a salt, and its application to such a use, Schoettgenius has largely proved in his Horae Hebraicae, vol. i. p. 18, etc.

Adam Clarke, 1831 · public domain

Ye are the salt of the earth. Mankind, lying in ignorance and wickedness, were as a vast heap, ready to putrify; but Christ sent forth his disciples, by their lives and doctrines to season it with knowledge and grace. If they are not such as they should be, they are as salt that has lost its savour. If a man can take up the profession of Christ, and yet remain graceless, no other doctrine, no other means, can make him profitable. Our light must shine, by doing such good works as men may see. What is between God and our souls, must be kept to ourselves; but that which is of itself open to the sight of men, we must study to make suitable to our profession, and praiseworthy. We must aim at the glory of God.

Matthew Henry, 1706 · public domain