Matthew 5:13-16

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.
Verse 14

Ye are the light of the world - That is, the instruments which God chooses to make use of to illuminate the minds of men; as he uses the sun (to which probably he pointed) to enlighten the world. Light of the world, נר עולם ner olam, was a title applied to the most eminent rabbins. Christ transfers the title from these, and gives it to his own disciples, who, by the doctrines that he taught them, were to be the means of diffusing the light of life throughout the universe.

A city that is set on a hill - This place may receive light from the following passage in Maundrell's Travels. "A few points toward the north (of Tabor) appears that which they call the Mount of Beatitudes, a small rising, from which our blessed Savior delivered his sermon in the fifth, sixth, and seventh chapters of Matthew. (See the note on Mat 5:5). Not far from this little hill is the city Saphet, supposed to be the ancient Bethulia. It stands upon a very eminent and conspicuous mountain, and is Seen Far and Near. May we not suppose that Christ alludes to this city, in these words of his, A city set on a hill cannot be hid?" p. 115. Quesnell remarks here: "The Christian life is something very high and sublime, to which we cannot arrive without pains: while it withdraws us from the earth, and carries us nearer heaven, it places us in view, and as a mark, to the malice of carnal men."
Verse 15

Neither do men light a candle and put it under a bushel - A bushel μοδιος: - a measure both among the Greeks and Romans, containing a little more than a peck English. From some ancient writers we learn, that only those who had bad designs hid a candle under a bushel; that, in the dead of the night, when all were asleep, they might rise up, and have light at hand to help them to effect their horrid purposes of murder, etc. See Wetstein, Kypke, Wolf, etc.
Verse 16

Let your light so shine - Or more literally, Thus let your light shine, Ουτω λαμψατω το φως. As the sun is lighted up in the firmament of heaven to diffuse its light and heat freely to every inhabitant of the earth; and as the lamp is not set under the bushel, but placed upon the lamp-stand that it may give light to all in the house; Thus let every follower of Christ, and especially every preacher of the Gospel, diffuse the light of heavenly knowledge, and the warmth of Divine love through the whole circle of their acquaintance.

That they may see your good works - It is not sufficient to have light - we must walk in the light, and by the light. Our whole conduct should be a perpetual comment on the doctrine we have received, and a constant exemplification of its power and truth.

And glorify your Father - The following curious saying is found in Bammidbar Rabba, s. 15. "The Israelites said to the holy blessed God, Thou commandest us to light lamps to thee; and yet thou art the, Light of the world, and with thee the light dwelleth. The holy blessed God answered, I do not command this because I need light; but that you may reflect light upon me, as I have illuminated you: - that the people may say, Behold, how the Israelites illustrate him, who illuminates them in the sight of the whole earth." See more in Schoettgen. Real Christians are the children of God - they are partakers of his holy and happy nature: they should ever be concerned for their Father's honor, and endeavor so to recommend him, and his salvation, that others may be prevailed on to come to the light, and walk in it. Then God is said to be glorified, when the glorious power of his grace is manifested in the salvation of men.
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