Matthew 5:13

Irenaeus Against Heresies Book I

Spiritual substance, again, they describe as having been sent forth for this end, that, being here united with that which is animal, it might assume shape, the two elements being simultaneously subjected to the same discipline. And this they declare to be "the salt"[80]

Irenaeus Against Heresies Book IV

which appertain to the human race, indicating that the Church also, which is the salt of the earth,[443]

Clement of Alexandria The Instructor Book III

For if it is proper mystically "in the closet" to pray to God, it will follow that we are also to greet mystically our neighbour, whom we are commanded to love second similarly to God, within doors, "redeeming the time." "For we are the salt of the earth."[158]

Clement of Alexandria Stromata Book I

Wherefore it was not said to all, "Ye are the salt of the earth."[95]

Clement of Alexandria Who is the Rich Man that Shall Be Saved?

There are, besides, some, the elect of the elect, and so much more or less distinguished by drawing themselves, like ships to the strand, out of the surge of the world and bringing themselves to safety; not wishing to seem holy, and ashamed if one call them so; hiding in the depth of their mind the ineffable mysteries, and disdaining to let their nobleness be seen in the world; whom the Word calls "the light of the world, and the salt of the earth."[64]

Origen Against Celsus Book VIII

and society is held together as long as the salt is uncorrupted: for "if the salt have lost its savour, it is neither fit for the land nor for the dunghill; but it shall be cast out, and trodden under foot of men. He that hath ears, let him hear"[130]

Cyprian Treatise I On the Unity of the Church

1. Since the Lord warns us, saying, "Ye are the salt of the earth,"[3]

Cyprian Treatise XII Three Books of Testimonies Against the Jews

But if the salt have lost his savour, in what shall it be salted? It is good for nothing, but to be cast out abroad, and to be trodden under foot of men."[751]

Seventh Council of Carthage Under Cyprian

said: Since the Lord in His Gospel said, "Ye are the salt of the earth: but if the salt should have lost its savour, wherewith shall it be salted? It is thenceforth good for nothing, but to be cast out of doors, and to be trodden under foot of men."[24]

Methodius Discourse I. Marcella

Now the whole spiritual meditation of the Scriptures is given to us as salt which stings in order to benefit, and which disinfects, without which it is impossible for a soul, by means of reason, to be brought to the Almighty; for "ye are the salt of the earth,"[8]