You are the light of the world
This phrase begins with the emphatic "You," indicating that Jesus is directly addressing His disciples and, by extension, all believers. The Greek word for "light" is "phōs," which signifies not just physical light but also spiritual illumination and truth. In the ancient world, light was a powerful symbol of purity, goodness, and divine presence. The "world" (Greek: "kosmos") refers to the entire human society, emphasizing the global scope of the disciples' influence. Historically, light was essential for navigation and safety, symbolizing guidance and protection. In a spiritual sense, believers are called to illuminate the darkness of the world with the truth of the Gospel, reflecting the light of Christ Himself.

A city on a hill
The imagery of "a city on a hill" is vivid and strategic. In ancient times, cities were often built on elevated ground for defense and visibility. The Greek word for "city" is "polis," which denotes a community or society. The "hill" (Greek: "oros") suggests elevation and prominence. This metaphor implies that the Christian community is meant to be conspicuous and influential, visible to all. Archaeologically, cities like Jerusalem were set on hills, making them visible from afar, serving as beacons of civilization and culture. Spiritually, this suggests that the Church should stand out in the world, offering hope and direction.

cannot be hidden
The phrase "cannot be hidden" underscores the inevitability of the light's visibility. The Greek word for "hidden" is "kryptō," meaning to conceal or keep secret. The construction of the sentence in Greek implies impossibility, stressing that true Christian witness is inherently visible and impactful. Historically, light sources in ancient times, such as lamps or torches, were designed to illuminate as much area as possible. In a spiritual context, this means that the transformative power of a life lived in Christ cannot be concealed; it naturally radiates outward, influencing others. Believers are called to live authentically, allowing their faith to be evident in all aspects of life.

(14) The light of the world.--In its highest or truest sense the word belongs to Christ, and to Him only (John 1:9; John 8:12). The comparison to the "candle" or "lamp" in Matthew 5:15 shows, indeed, that even here the disciples are spoken of as shining in the world with a derived brightness flowing to them from the Fount of light.

A city that is set on an hill.--Assuming the Sermon on the Mount to have been preached from one of the hills of Galilee near the "horns of Hattin," our Lord may have looked or pointed at Safed, 2,650 feet above the sea, commanding one of the grandest panoramic views in Palestine. It is now one of the four holy cities of the Jews, and probably existed as a fortress in our Lord's time (Thomson's The Land and the Book, p. 273). The imagery might, however, come from the prophetic visions of the Zion of the future, idealising the position of the actual Zion (Isaiah 2:2; Micah 4:1). No image could so vividly set forth the calling of the Church of Christ as a visible society. For good or for evil, it could not fail to be prominent in the world's history, a city of refuge for the weary, or open to the attacks of the invader. . . .

Verse 14. - Matthew only. Ye are the light of the world. After speaking of the moral tone that the disciples were to give to the world, in contrast to sin in its corrupting power, Christ refers to them as enlightening, in contrast to sin as darkness and ignorance. Our Lord further naturally exchanges the term "the earth" (which from its strong materialism had suited the figure of the salt) for "the world" - a phrase which must, indeed, as regards the disciples, be limited to this earth, but as regards the light, need not be limited to less than the solar system. In other words, the simple reason why he exchanges "earth" for "world" is that they are respectively the best suited to the figure employed. Notice that Christ never applies the former figure, of salt, to himself; but the latter, of light, once or twice, especially John 8:12, where, since he is speaking of himself, and not of others, he adds the thought of life being connected with light, a city, etc.; literally, a city cannot be hid when set on a mountain. It seems at first slightly awkward to introduce the figure of a city between those of the sun and the lamp, both these having to do with light. The reason is that the city is not considered as such, but only as an object which can be teen, and which cannot (οὐ δύναται, emphatic) from its physical conditions avoid being seen. There is a true gradation in the thought of influence. The sun must be seen by all; the city, by the whole neighbourhood; the lamp, by the family. Our Lord comes from the general to the particular; from what is almost theory, at best a matter of hope and faith, to hard fact and practice. The influence you are to have - if it is to be for the whole world, as indeed it is, must be felt in the neighbourhood in which you live, and a fortiori in the immediate circle of your own home. Conjectures have been made whether any one city can reasonably be mentioned as being in sight, and so having suggested this image to our Lord. If the exact spot where he was then sitting were itself certain, such conjectures might be worth considering. But, in fact, so many "cities" in Palestine were set on hills that the inquiry seems vain. Safed, some twelve miles north-west of Capernaum, the view from which extends to Tiberias (Neubaur, 'Geogr.,' p. 228), has been accepted by many, but evidence is lacking for it having been a city at that time. Tabor, at the south-west of the lake, has also been thought of, and at all events seems to have been then a fortified town. The view from it is even more extensive than from Safed (vide especially Socin's Baedeker, p. 365).

Parallel Commentaries ...


You
Ὑμεῖς (Hymeis)
Personal / Possessive Pronoun - Nominative 2nd Person Plural
Strong's 4771: You. The person pronoun of the second person singular; thou.

are
ἐστε (este)
Verb - Present Indicative Active - 2nd Person Plural
Strong's 1510: I am, exist. The first person singular present indicative; a prolonged form of a primary and defective verb; I exist.

the
τὸ (to)
Article - Nominative Neuter Singular
Strong's 3588: The, the definite article. Including the feminine he, and the neuter to in all their inflections; the definite article; the.

light
φῶς (phōs)
Noun - Nominative Neuter Singular
Strong's 5457: Light, a source of light, radiance. From an obsolete phao; luminousness.

of the
τοῦ (tou)
Article - Genitive Masculine Singular
Strong's 3588: The, the definite article. Including the feminine he, and the neuter to in all their inflections; the definite article; the.

world.
κόσμου (kosmou)
Noun - Genitive Masculine Singular
Strong's 2889: Probably from the base of komizo; orderly arrangement, i.e. Decoration; by implication, the world (morally).

A city
πόλις (polis)
Noun - Nominative Feminine Singular
Strong's 4172: A city, the inhabitants of a city. Probably from the same as polemos, or perhaps from polus; a town.

on
ἐπάνω (epanō)
Preposition
Strong's 1883: From epi and ano; up above, i.e. Over or on.

a hill
ὄρους (orous)
Noun - Genitive Neuter Singular
Strong's 3735: A mountain, hill. Probably from an obsolete oro; a mountain: -hill, mount(-ain).

cannot
δύναται (dynatai)
Verb - Present Indicative Middle or Passive - 3rd Person Singular
Strong's 1410: (a) I am powerful, have (the) power, (b) I am able, I can. Of uncertain affinity; to be able or possible.

be hidden.
κρυβῆναι (krybēnai)
Verb - Aorist Infinitive Passive
Strong's 2928: To hide, conceal, lay up. A primary verb; to conceal.


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NT Gospels: Matthew 5:14 You are the light of the world (Matt. Mat Mt)