You are the light of the world. A city that is set on a hill cannot be hid.
All Commentaries on Matthew 5:14 Go To Matthew 5
John Chrysostom
AD 407
After this He leads on to another, a higher image.
You are the light of the world. Matthew 5:14
Of the world again; not of one nation, nor of twenty states, but of the whole inhabited earth. And a light to the mind, far better than this sunbeam: like as they were also a spiritual salt. And before they are salt, and now light; to teach you how great is the gain of these strict precepts, and the profit of that grave discipline: how it binds, and permits not to become dissolute; and causes clear sight, leading men on to virtue.
A city that is set on a hill cannot be hid, neither do men light a candle, and put it under the bushel.
Again, by these words He trains them to strictness of life, teaching them to be earnest in their endeavors, as set before the eyes of all men, and contending in the midst of the amphitheatre of the world. For, look not to this, He says, that we are now sitting here, that we are in a small portion of one corner. For you shall be as conspicuous to all as a city set on the ridge of a hill, as a candle in a house on the candlestick, giving light.
Where now are they who persevere in disbelieving the power of Christ? Let them hear these things, and let them adore His might, amazed at the power of the prophecy. For consider how great things he promised to them, who were not known even in their own country: that earth and sea should know them, and that they should by their fame reach to the limits of the inhabited world; or rather, not by their fame, but by the working of the good they wrought. For it was not fame that bearing them everywhere made them conspicuous, but also the actual demonstration by their works. Since, as though they had wings, more vehemently than the sunbeam did they overrun the whole earth, sowing the light of godliness.
But here He seems to me to be also training them to boldness of speech. For to say, A city set on a hill cannot be hid, is to speak as declaring His own powers. For as that city can by no means be hidden, so it was impossible that what they preached should sink into silence and obscurity. Thus, since He had spoken of persecutions and calumnies, of plots and wars, for fear they might think that these would have power to stop their mouths; to encourage them, He says, that so far from being hid, it should over-shine the whole world; and that on this very account they should be illustrious and renowned.