3:1 - And unto the angel of the church in Sardis write; These things says he that has the seven Spirits of God, and the seven stars; I know your works, that you have a name that you live, and are dead.

Shepherd of Hermas Similitude Sixth
These have been perverted from the truth: among them there is the hope of repentance, by which it is possible to live. Corruption, then, has a hope of a kind of renewal,[7]
Tertullian On Modesty
and with "the angel of the Church,"[156]

3:2 - Be watchful, and strengthen the things which remain, that are ready to die: for I have not found your works perfect before God.

Tertullian On Repentance
accuses the Sardians of "works not full; "[73]
2 Clement
and has saved many by coming and calling us when hastening to destruction.[23]

3:4 - You have a few names even in Sardis which have not defiled their garments; and they shall walk with me in white: for they are worthy.

Shepherd of Hermas Similitude Ninth
" "Why, then, sir," I said, "do all these trees bear fruit, and some of them fairer than the rest? ""Listen," he said: "all who once suffered for the name of the Lord are honourable before God; and of all these the sins were remitted, because they suffered for the name of the Son of God.[46]
Tertullian On the Resurrection of the Flesh
Thus in the Revelation of John it is said: "These are they which have not defiled their clothes with women,"[190]

3:5 - He that overcomes, the same shall be clothed in white raiment; and I will not blot out his name out of the book of life, but I will confess his name before my Father, and before his angels.

Tertullian On the Resurrection of the Flesh
Therefore they shall be "clothed in white raiment,"[192]

3:7 - And to the angel of the church in Philadelphia write; These things says he that is holy, he that is true, he that has the key of David, he that opens, and no man shuts; and shuts, and no man opens;

Irenaeus Against Heresies Book IV
[it is implied that] nothing has been kept back [from Him], and for this reason the same person is the Judge of the living and the dead; "having the key of David: He shall Open, and no man shall shut: He shall shut, and no man shall open."[272]
Gregory Thaumaturgus Oration and Panegyric Addressed to Origen
And this principle is expressed indeed in the Holy Scriptures themselves, when it is said that only He who shutteth openeth, and no other one whatever;[99]

3:8 - I know your works: behold, I have set before you an open door, and no man can shut it: for you have a little strength, and have kept my word, and have not denied my name.

Dionysius Extant Fragments Part II
And in Cephro indeed a considerable church sojourned with us, composed partly of the brethren who followed us from the city, and partly of those who joined us from Egypt. There, too, did God open to us a door[91]

3:10 - Because you have kept the word of my patience, I also will keep you from the hour of temptation, which shall come upon all the world, to try them that dwell upon the earth.

Tertullian Scorpiace
the very faithful martyr, who was slain where Satan dwelleth. Also to the angel of the church in Philadelphia[85]

3:11 - Behold, I come quickly: hold that fast which you have, that no man take your crown.

Cyprian Treatise IX On the Advantage of Patience
and again, "Hold that which thou hast, that another take not thy crown."[33]
Cyprian Treatise XI Exhortation to Martyrdom Addressed to Fortunatus
And in the Apocalypse the same exhortation of divine preaching speaks, saying, "Hold fast that which thou hast, lest another take thy crown; "[63]

3:14 - And unto the angel of the church of the Laodiceans write; These things says the Amen, the faithful and true witness, the beginning of the creation of God;

Instructions of Commodianus
The winds assemble into lightnings, the heavenly wrath rages; and wherever the wicked man fleeth, he is seized upon by this fire. There will be no succour nor ship of he sea. Amen[13]
Hippolytus Refutation of All Heresies Book V
And from such an intercourse the Father generates out of Edem unto himself twelve angels. And the names of the angels begotten by the Father are these: Michael, Amen,[256]
Hippolytus Refutation of All Heresies Book VI
.[122]

3:17 - Because you says, I am rich, and increased with goods, and have need of nothing; and know not that you are wretched, and miserable, and poor, and blind, and naked:

Tertullian On Repentance
upbraids the Laodiceans for trusting to their riches;[75]
Cyprian Treatise VIII On Works and Alms
I counsel thee to buy of me gold tried in the fire, that thou mayest be rich; and white raiment, that thou mayest be clothed, and that the shame of thy nakedness may not appear in thee; and anoint thine eyes with eye-salve, that thou mayest see."[42]

3:18 - I counsel you to buy of me gold tried in the fire, that you may be rich; and white raiment, that you may be clothed, and that the shame of your nakedness do not appear; and anoint yours eyes with eye salve, that you may see.

Tertullian On Monogamy
clothing us from His own store[58]

3:19 - As many as I love, I rebuke and chasten: be zealous therefore, and repent.

Tertullian Of Patience
us to give thanks and rejoice, over and above, at being thought worthy of divine chastisement. "Whom I love," saith He, "I chasten."[112]

3:21 - To him that overcomes will I grant to sit with me in my throne, even as I also overcame, and am set down with my Father in his throne.

Tertullian On Idolatry
For avoiding it, remedies cannot be lacking; since, even if they be lacking, there remains that one by which you will be made a happier magistrate, not in the earth, but in the heavens.[151]
Hippolytus Refutation of All Heresies Book X
wasted by disease. For thou hast become God:[70]
Hippolytus Dogmatical and Historical Fragments
The Father of immortality sent the immortal Son and Word into the world, who came to man in order to wash him with water and the Spirit; and He, begetting us again to incorruption of soul and body, breathed into us the breath (spirit) of life, and endued us with an incorruptible panoply. If, therefore, man has become immortal, he will also be God.[408]
Cyprian Epistle XXV
and "To him that overcometh will I give to sit on my throne, even as I also overcame and am set down on the throne of my Father."[7]