Early Church Fathers Scripture Index : Texts

Isaiah 6:3

There are 26 footnotes for this reference.

Ante-Nicene Fathers, Volume 1, page 14, footnote 8 (Image)

Apostolic Fathers, Justin Martyr, Irenaeus

Clement of Rome (HTML)

First Epistle to the Corinthians (HTML)

Chapter XXXIV.—Great is the reward of good works with God. Joined together in harmony, let us implore that reward from Him. (HTML)
CCEL Footnote 143 (In-Text, Margin)

... therefore, with our whole heart to attend to this, that we be not lazy or slothful in any good work. Let our boasting and our confidence be in Him. Let us submit ourselves to His will. Let us consider the whole multitude of His angels, how they stand ever ready to minister to His will. For the Scripture saith, “Ten thousand times ten thousand stood around Him, and thousands of thousands ministered unto Him, and cried, Holy, holy, holy, [is] the Lord of Sabaoth; the whole creation is full of His glory.”[Isaiah 6:3] And let us therefore, conscientiously gathering together in harmony, cry to Him earnestly, as with one mouth, that we may be made partakers of His great and glorious promises. For [the Scripture] saith, “Eye hath not seen, nor ear heard, neither ...

Ante-Nicene Fathers, Volume 3, page 682, footnote 12 (Image)

Tertullian (I, II, III)

Ethical. (HTML)

On Prayer. (HTML)

The Second Clause. (HTML)
CCEL Footnote 8779 (In-Text, Margin)

... other by whom He may be wished well, or as if He would suffer unless we do so wish. Plainly, it is universally becoming for God to be blessed in every place and time, on account of the memory of His benefits ever due from every man. But this petition also serves the turn of a blessing. Otherwise, when is the name of God not “holy,” and “hallowed” through Himself, seeing that of Himself He sanctifies all others—He to whom that surrounding circle of angels cease not to say, “Holy, holy, holy?”[Isaiah 6:3] In like wise, therefore, we too, candidates for angelhood, if we succeed in deserving it, begin even here on earth to learn by heart that strain hereafter to be raised unto God, and the function of future glory. So far, for the glory of God. On the ...

Ante-Nicene Fathers, Volume 4, page 253, footnote 3 (Image)

Tertullian (IV), Minucius Felix, Commodian, Origen

Origen. (HTML)

Origen De Principiis. (HTML)

Book I (HTML)
On the Holy Spirit. (HTML)
CCEL Footnote 2000 (In-Text, Margin)

... the Old Testament also, as when it is said, “He that giveth His Spirit to the people who are upon the earth, and Spirit to them who walk thereon.” For, without doubt, every one who walks upon the earth (i.e., earthly and corporeal beings) is a partaker also of the Holy Spirit, receiving it from God. My Hebrew master also used to say that those two seraphim in Isaiah, which are described as having each six wings, and calling to one another, and saying, “Holy, holy, holy, is the Lord God of hosts,”[Isaiah 6:3] were to be understood of the only-begotten Son of God and of the Holy Spirit. And we think that that expression also which occurs in the hymn of Habakkuk, “In the midst either of the two living things, or of the two lives, Thou wilt be known,” ought ...

Ante-Nicene Fathers, Volume 4, page 376, footnote 1 (Image)

Tertullian (IV), Minucius Felix, Commodian, Origen

Origen. (HTML)

Origen De Principiis. (HTML)

IV (HTML)
Sections 24-End translated from the Latin. (HTML)
CCEL Footnote 2959 (In-Text, Margin)

... are gods.” For my Hebrew teacher also used thus to teach, that as the beginning or end of all things could be comprehended by no one, save only our Lord Jesus Christ and the Holy Spirit, so under the form of a vision Isaiah spake of two seraphim alone, who with two wings cover the countenance of God, and with two His feet, and with two do fly, calling to each other alternately, and saying, “Holy, holy, holy is the Lord God of Sabaoth; the whole earth is full of Thy glory.”[Isaiah 6:3] That the seraphim alone have both their wings over the face of God, and over His feet, we venture to declare as meaning that neither the hosts of holy angels, nor the “holy seats,” nor the “dominions,” nor the “principalities,” nor the “powers,” can ...

Ante-Nicene Fathers, Volume 5, page 252, footnote 6 (Image)

Hippolytus, Cyprian, Caius, Novatian, Appendix

Hippolytus. (HTML)

Appendix to the Works of Hippolytus. Containing Dubious and Spurious Pieces. (HTML)

A discourse by the most blessed Hippolytus, bishop and martyr, on the end of the world, and on Antichrist, and on the second coming of our lord Jesus Christ. (HTML)
Section XXXIX. (HTML)
CCEL Footnote 1994 (In-Text, Margin)

... things, both heaven and earth and things under the earth. And every tongue shall confess Him openly, and shall confess Him who comes to judge righteous judgment, the mighty God and Maker of all things. Then with fear and astonishment shall come angels, thrones, powers, principalities, dominions, and the cherubim and seraphim with their many eyes and six wings, all crying aloud with a mighty voice, “Holy, holy, holy is the Lord of hosts, omnipotent; the heaven and the earth are full of Thy glory.”[Isaiah 6:3] And the King of kings and Lord of lords, the Judge who accepts no man’s person, and the Jurist who distributes justice to every man, shall be revealed upon His dread and lofty throne; and all the flesh of mortals shall see His face with great fear ...

Ante-Nicene Fathers, Volume 6, page 384, footnote 1 (Image)

Gregory Thaumaturgus, Dionysius the Great, Julius Africanus, Anatolius and Minor Writers, Methodius, Arnobius

Methodius. (HTML)

Oration Concerning Simeon and Anna On the Day that They Met in the Temple. (HTML)

CCEL Footnote 2998 (In-Text, Margin)

... hosts. And one of the seraphim was sent unto me, having a live coal in his hand, which he had taken with the tongs from off the altar. And he touched my mouth, and said, Lo, this hath touched thy lips; and thine iniquity is taken away, and thy sin is purged. Also I heard the voice of the Lord, saying, Whom shall I send, and who will go unto this people? Then said I, Here am I; send me. And He said, Go, and tell this people, Hear ye indeed, but understand not; and see ye indeed, but perceive not.”[Isaiah 6:1-9] These are the proclamations made beforehand by the prophet through the Spirit. Do thou, dearly beloved, consider the force of these words. So shalt thou understand the issue of these sacramental symbols, and know both what and how great this ...

Ante-Nicene Fathers, Volume 6, page 385, footnote 7 (Image)

Gregory Thaumaturgus, Dionysius the Great, Julius Africanus, Anatolius and Minor Writers, Methodius, Arnobius

Methodius. (HTML)

Oration Concerning Simeon and Anna On the Day that They Met in the Temple. (HTML)

CCEL Footnote 3016 (In-Text, Margin)

... likewise remaining intact. She goes up, therefore to the temple, she who was more exalted than the temple, clothed with a double glory—the glory, I say, of undefiled virginity, and that of ineffable fecundity, the benediction of the law, and the sanctification of grace. Wherefore he says who saw it: “And the whole house was full of His glory, and the seraphim stood round about him; and one cried unto another, and said, Holy, holy, holy, is the Lord of hosts: the whole earth is full of His glory.”[Isaiah 6:3] As also the blessed prophet Habakkuk has charmingly sung, saying, “In the midst of two living creatures thou shalt be known: as the years draw nigh thou shalt be recognised—when the time is come thou shalt be shown forth.” See, I pray you, the ...

Ante-Nicene Fathers, Volume 6, page 392, footnote 6 (Image)

Gregory Thaumaturgus, Dionysius the Great, Julius Africanus, Anatolius and Minor Writers, Methodius, Arnobius

Methodius. (HTML)

Oration Concerning Simeon and Anna On the Day that They Met in the Temple. (HTML)

CCEL Footnote 3095 (In-Text, Margin)

... your house is left unto you desolate.” Also, in another place, “The king sent forth his armies, and destroyed those murderers, and burnt up their city.” Of such a nature was the adverse reward of the Jews for their unbelief, which caused them to refuse to pay to the Trinity the tribute of praise. For after that the ends of the earth were sanctified, and the mighty house of the Church was filled, by the proclamation of the Thrice Holy, with the glory of the Lord, as the great waters cover the seas,[Isaiah 6:3-4] there happened to them the things which before had been declared, and the beginning of prophecy was confirmed by its issue, the preacher of truth signifying, as has been said, by the Holy Spirit, as it were in an example, the dreadful destruction ...

Ante-Nicene Fathers, Volume 6, page 395, footnote 7 (Image)

Gregory Thaumaturgus, Dionysius the Great, Julius Africanus, Anatolius and Minor Writers, Methodius, Arnobius

Methodius. (HTML)

Oration on the Palms. (HTML)

Oration on the Palms. (HTML)
CCEL Footnote 3128 (In-Text, Margin)

... their after perfecting, by the worship of God and the exercise of the true religion. To-day, according to the prophet, is the King of Glory glorified upon earth, and makes us, the inhabitants of earth, partakers of the heavenly feast, that He may show himself to be the Lord of both, even as He is hymned with the common praises of both. Therefore it was that the heavenly hosts sang, announcing salvation upon earth, “Holy, holy, holy, is the Lord God of hosts; the whole earth is full of His glory.”[Isaiah 6:3] And those below, joining in harmony with the joyous hymns of heaven, cried: “Hosanna in the highest; Hosanna to the Son of David.” In heaven the doxology was raised, “Blessed be the glory of the Lord from His place;” and on earth was this caught up ...

Ante-Nicene Fathers, Volume 7, page 473, footnote 5 (Image)

Lactantius, Venantius, Asterius, Victorinus, Dionysius, Apostolic Teaching and Constitutions, 2 Clement, Early Liturgies

Constitutions of the Holy Apostles (HTML)

Book VII. Concerning the Christian Life, and the Eucharist, and the Initiation into Christ (HTML)

Sec. II.—On the Formation of the Character of Believers, and on Giving of Thanks to God (HTML)
CCEL Footnote 3489 (In-Text, Margin)

... with sand, as standing in awe at Thy command, and compels all men to dry out: “How great are Thy works, O Lord! in wisdom hast Thou made them all: the earth is full of Thy creation.” And the bright host of angels and the intellectual spirits say to Palmoni, “There is but one holy Being;” and the holy seraphim, together with the six-winged cherubim, who sing to Thee their triumphal song, cry out with never-ceasing voices, “Holy, holy, holy, Lord God of hosts! heaven and earth are full of Thy glory;”[Isaiah 6:3] and the other multitudes of the orders, angels archangels, thrones, dominions, principalities, authorities, and powers cry aloud, and say, “Blessed be the glory of the Lord out of His place.” But Israel, Thy Church on earth, taken out of the ...

Ante-Nicene Fathers, Volume 7, page 488, footnote 16 (Image)

Lactantius, Venantius, Asterius, Victorinus, Dionysius, Apostolic Teaching and Constitutions, 2 Clement, Early Liturgies

Constitutions of the Holy Apostles (HTML)

Book VIII. Concerning Gifts, and Ordinations, and the Ecclesiastical Canons (HTML)

Sec. II.—Election and Ordination of Bishops: Form of Service on Sundays (HTML)
CCEL Footnote 3661 (In-Text, Margin)

... dominions, principalities, authorities, and powers, Thine everlasting armies, adore. The cherubim and the six-winged seraphim, with twain covering their feet, with twain their heads, and with twain flying, say, together with thousand thousands of archangels, and ten thousand times ten thousand of angels, incessantly, and with constant and loud voices, and let all the people say it with them: “Holy, holy, holy, Lord of hosts, heaven and earth are full of His glory: be Thou blessed for ever. Amen.”[Isaiah 6:3] And afterwards let the high priest say: For Thou art truly holy, and most holy, the highest and most highly exalted for ever. Holy also is Thy only begotten Son our Lord and God, Jesus Christ, who in all things ministered to His God and Father, both ...

Ante-Nicene Fathers, Volume 8, page 584, footnote 8 (Image)

Twelve Patriarchs, Excerpts and Epistles, The Clementina, Apocryphal Gospels and Acts, Syriac Documents

Apocrypha of the New Testament. (HTML)

Revelation of John. (HTML)

CCEL Footnote 2586 (In-Text, Margin)

... shall be rent from the rising of the sun even to the setting, and an innumerable multitude of angels shall come down to the earth; and then the treasures of the heavens shall be opened, and they shall bring down every precious thing, and the perfume of incense, and they shall bring down to the earth Jerusalem robed like a bride. And then there shall go before me myriads of angels and archangels, bearing my throne, crying out, Holy, holy, holy, Lord of Sabaoth; heaven and earth are full of Thy glory.[Isaiah 6:3] And then will I come forth with power and great glory, and every eye in the clouds shall see me; and then every knee shall bend, of things in heaven, and things on earth, and things under the earth. And then the heaven shall remain empty; and I will ...

Ante-Nicene Fathers, Volume 9, page 239, footnote 13 (Image)

Gospel of Peter, Diatessaron, Apocalypses, Visio Pauli, Testament of Abraham, Acts of X/P, Zosimus, Aristides, Clement, Origen

The Epistles of Clement. (HTML)

The First Epistle of Clement to the Corinthians. (HTML)

Great is the Reward of Good Works with God.  Joined Together in Harmony, Let Us Implore that Reward from Him. (HTML)
CCEL Footnote 4174 (In-Text, Margin)

... therefore, with our whole heart to attend to this, that we be not lazy or slothful in any good work. Let our boasting and our confidence be in Him. Let us submit ourselves to His will. Let us consider the whole multitude of His angels, how they stand ever ready to minister to His will. For the Scripture saith, “Ten thousand times ten thousand stood around Him, and thousands of thousands ministered unto Him, and cried, Holy, holy, holy, [is] the Lord of Sabaoth; the whole creation is full of His glory.”[Isaiah 6:3] And let us therefore, conscientiously gathering together in harmony, cry to Him earnestly, as with one mouth, that we may be made partakers of His great and glorious promises. For [the Scripture] saith, “Eye hath not seen, nor ear heard, neither ...

Nicene and Post-Nicene Fathers, Series 1, Volume 1, page 313, footnote 5 (Image)

Augustine: Prolegomena: St. Augustine's Life and Work, Confessions, Letters

Letters of St. Augustin (HTML)

Letters of St. Augustin (HTML)

To Januarius (HTML)
CCEL Footnote 1830 (In-Text, Margin)

... our Lord’s words thus, “I with the finger of God cast out devils,” another quotes them thus, “I cast out devils by the Spirit of God.” Who would not prefer the joy which these divine mysteries impart, when the light of healing truth beams from them on the soul to all the kingdoms of this world, even though these were held in perfect prosperity and peace? May we not say, that as the two seraphim answer each other in singing the praise of the Most High, “Holy, holy, holy is the Lord God of Hosts,”[Isaiah 6:3] so the Old Testament and the New, in perfect harmony, give forth their testimony to sacred truth? The lamb is slain, the passover is celebrated, and after 50 days the Law is given, which inspires fear, written by the finger of God. Christ is slain, ...

Nicene and Post-Nicene Fathers, Series 1, Volume 4, page 199, footnote 2 (Image)

Augustine: The Anti-Manichaean Writings, The Anti-Donatist Writings

Writings in Connection with the Manichæan Controversy. (HTML)

Reply to Faustus the Manichæan. (HTML)

Faustus denies that the prophets predicted Christ.  Augustin proves such prediction from the New Testament, and expounds at length the principal types of Christ in the Old Testament. (HTML)
CCEL Footnote 487 (In-Text, Margin)

... character of the patriarchs and prophets. It is the reply of the babes of our faith, among whom I would reckon myself, inasmuch as I would not find fault with the life of the ancient saints, even if I did not understand its mystical character. Their life is proclaimed to us with approval by the apostles in their Gospel, as they themselves in their prophecy foretold the future apostles, that the two Testaments, like the seraphim, might cry to one another, "Holy, holy, holy is the Lord God of hosts."[Isaiah 6:3] When Faustus, instead of the vague general accusation which he makes here, condemns particular actions in the lives of the patriarchs and the prophets, the Lord their God, and ours also, will assist me to reply suitably and appropriately to the ...

Nicene and Post-Nicene Fathers, Series 1, Volume 8, page 179, footnote 7 (Image)

Augustine: Expositions on the Psalms

Expositions on the Book of Psalms. (HTML)

Psalm L (HTML)

CCEL Footnote 1694 (In-Text, Margin)

... in His Name throughout all nations.” For all nations are from the rising of the sun unto the going down. But that, “Out of Sion is the semblance of His beauty,” that thence beginneth the beauty of His Gospel, that thence He began to be preached, being “beautiful in form beyond the sons of men,” agreeth with the words of the Lord, who saith, “Beginning at Jerusalem.” New things are in tune with old, old things with new: the two Seraphim say to one another, “Holy, holy, holy, Lord God of Sabaoth.”[Isaiah 6:3] The two Testaments are both in tune, and the two Testaments have one voice: let the voice of the Testaments in tune be heard, not that of pretenders disinherited. This thing then hath the God of gods done, “He hath called the world from the rising ...

Nicene and Post-Nicene Fathers, Series 1, Volume 9, page 394, footnote 3 (Image)

Chrysostom: On the Priesthood, Ascetic Treatises, Select Homilies and Letters, Homilies on the Statutes

The Homilies on the Statues to the People of Antioch. (HTML)

Homily VII (HTML)

CCEL Footnote 1362 (In-Text, Margin)

... washed; and fearfully and tremblingly, with much reverence and devotion; and dost thou unceremoniously bandy about upon thy tongue the Lord of the Gospel? Dost thou desire to learn how the Powers above pronounce that Name; with what awe, with what terror, with what wonder? “I saw the Lord,” saith the prophet, “sitting upon a throne, high, and lifted up; around Him stood the Seraphim; and one cried unto another, and said, Holy, Holy, Holy, Lord God of Sabaoth; the whole earth is full of His glory!”[Isaiah 6:3] Perceivest thou, with what dread, with what awe, they pronounce that Name, whilst glorifying and praising Him? But thou, in thy prayers and supplications, callest upon Him with much listlessness; when it would become thee to be full of awe, and to ...

Nicene and Post-Nicene Fathers, Series 2, Volume 6, page 108, footnote 14 (Image)

Jerome: Letters and Select Works

The Letters of St. Jerome. (HTML)

To Furia. (HTML)

CCEL Footnote 1616 (In-Text, Margin)

... widow in the gospel who, though she was but a poor widow was yet richer than all the people of Israel. She had but a grain of mustard seed, but she put her leaven in three measures of flour; and, combining her confession of the Father and of the Son with the grace of the Holy Spirit, she cast her two mites into the treasury. All the substance that she had, her entire possessions, she offered in the two testaments of her faith. These are the two seraphim which glorify the Trinity with threefold song[Isaiah 6:2-3] and are stored among the treasures of the church. They also form the legs of the tongs by which the live coal is caught up to purge the sinner’s lips.

Nicene and Post-Nicene Fathers, Series 2, Volume 7, page 154, footnote 3 (Image)

Cyril of Jerusalem, Gregory Nazianzen

The Catechetical Lectures of S. Cyril. (HTML)

On the Mysteries. V:  On the Sacred Liturgy and Communion. (HTML)

CCEL Footnote 2485 (In-Text, Margin)

... rational and irrational, visible and invisible; of Angels, Archangels, Virtues, Dominions, Principalities, Powers, Thrones; of the Cherubim with many faces: in effect repeating that call of David’s Magnify the Lord with me. We make mention also of the Seraphim, whom Esaias in the Holy Spirit saw standing around the throne of God, and with two of their wings veiling their face, and with twain their feet, while with twain they did fly, crying Holy, Holy, Holy, is the Lord of Sabaoth[Isaiah 6:2-3]. For the reason of our reciting this confession of God, delivered down to us from the Seraphim, is this, that so we may be partakers with the hosts of the world above in their Hymn of praise.

Nicene and Post-Nicene Fathers, Series 2, Volume 7, page 337, footnote 2 (Image)

Cyril of Jerusalem, Gregory Nazianzen

Select Orations of Saint Gregory Nazianzen. (HTML)

On the Arrival of the Egyptians. (HTML)

CCEL Footnote 3803 (In-Text, Margin)

XIII. To sum up my discourse:—Glorify Him with the Cherubim, who unite the Three Holies into One Lord,[Isaiah 6:3] and so far indicate the Primal Substance as their wings open to the diligent. With David be enlightened, who said to the Light, In Thy Light shall we see Light, that is, in the Spirit we shall see the Son; and what can be of further reaching ray? With John thunder, sounding forth nothing that is low or earthly concerning God, but what is high and heavenly, Who is in the beginning, and is with God, and is God the Word, and true God of the true ...

Nicene and Post-Nicene Fathers, Series 2, Volume 8, page 24, footnote 13 (Image)

Basil: Letters and Select Works

De Spiritu Sancto. (HTML)

That the Holy Spirit is in every conception inseparable from the Father and the Son, alike in the creation of perceptible objects, in the dispensation of human affairs, and in the judgment to come. (HTML)

CCEL Footnote 1049 (In-Text, Margin)

... the eyes fall blind and their faculties become inactive, and the worth of objects cannot be discerned, and gold is trodden on in ignorance as though it were iron, so in the order of the intellectual world it is impossible for the high life of Law to abide without the Spirit. For it so to abide were as likely as that an army should maintain its discipline in the absence of its commander, or a chorus its harmony without the guidance of the Coryphæus. How could the Seraphim cry “Holy, Holy, Holy,”[Isaiah 6:3] were they not taught by the Spirit how often true religion requires them to lift their voice in this ascription of glory? Do “all His angels” and “all His hosts” praise God? It is through the co-operation of the Spirit. Do “thousand thousand” of ...

Nicene and Post-Nicene Fathers, Series 2, Volume 10, page 151, footnote 1 (Image)

Ambrose: Select Works and Letters

Dogmatic Treatises, Ethical Works, and Sermons. (HTML)

On the Holy Spirit. (HTML)

Book III. (HTML)
Chapter XVI. The Father is holy, and likewise the Son and the Spirit, and so They are honoured in the same Trisagion: nor can we speak more worthily of God than by calling Him Holy; whence it is clear that we must not derogate from the dignity of the Holy Spirit. In Him is all which pertains to God, since in baptism He is named with the Father and the Son, and the Father has given to Him to be greater than all, nor can any one deprive Him of this. And so from the very passage of St. John which heretics used against His dignity, the equality of the Trinity and the Unity of the Godhead is established. Lastly, after explaining how the Son receives from the Father, St. Ambrose shows how various heresies are refuted by the passage cited. (HTML)
CCEL Footnote 1378 (In-Text, Margin)

110. So everything which we esteem holy proclaims that Sole Holiness. Cherubim and Seraphim with unwearied voices praise Him and say: “Holy, Holy, Holy, is the Lord God of Sabaoth.”[Isaiah 6:3] They say it, not once, lest you should believe that there is but one; not twice, lest you should exclude the Spirit; they say not holies [in the plural], lest you should imagine that there is plurality, but they repeat thrice and say the same word, that even in a hymn you may understand the distinction of Persons in the Trinity, and the oneness of the Godhead and while they say this they proclaim God.

Nicene and Post-Nicene Fathers, Series 2, Volume 10, page 157, footnote 7 (Image)

Ambrose: Select Works and Letters

Dogmatic Treatises, Ethical Works, and Sermons. (HTML)

On the Holy Spirit. (HTML)

Book III. (HTML)
Chapter XXI. Isaiah was sent by the Spirit, and accordingly the same Spirit was seen by him. What is meant by the revolving wheels, and the divers wings, and how since the Spirit is proclaimed Lord of Sabaoth by the Seraphim, certainly none but impious men can deny Him this title. (HTML)
CCEL Footnote 1440 (In-Text, Margin)

... him, it is certainly the Spirit Whom, after Uzziah’s death, Isaiah saw, when he said: “I saw the Lord of Sabaoth sitting upon a throne, high and lifted up, and the house was full of His majesty. And the Seraphim stood round about Him, each one had six wings, and with two they were covering His face, and with two they were covering His feet, and with two they were flying; and they cried out one to the other, and said, Holy, holy, holy is the Lord of Sabaoth, the whole earth is full of His majesty.”[Isaiah 6:1-3]

Nicene and Post-Nicene Fathers, Series 2, Volume 10, page 204, footnote 8 (Image)

Ambrose: Select Works and Letters

Dogmatic Treatises, Ethical Works, and Sermons. (HTML)

Exposition of the Christian Faith. (HTML)

Book I. (HTML)
Chapter III. By evidence gathered from Scripture the unity of Father and Son is proved, and firstly, a passage, taken from the Book of Isaiah, is compared with others and expounded in such sort as to show that in the Son there is no diversity from the Father's nature, save only as regards the flesh; whence it follows that the Godhead of both Persons is One. This conclusion is confirmed by the authority of Baruch. (HTML)
CCEL Footnote 1706 (In-Text, Margin)

20. Now the oracles of the prophets bear witness what close unity holy Scripture declares to subsist between the Father and the Son as regards their Godhead. For thus saith the Lord of Sabaoth:[Isaiah 6:3] “Egypt hath laboured, and the commerce of the Ethiopians and Sabeans: mighty men shall come over to thee, and shall be thy servants, and in thy train shall they follow, bound in fetters, and they shall fall down before thee, and to thee shall they make supplication: for God is in thee, and there is no God beside thee. For thou art God, and we knew it not, O God of Israel.”

Nicene and Post-Nicene Fathers, Series 2, Volume 10, page 218, footnote 5 (Image)

Ambrose: Select Works and Letters

Dogmatic Treatises, Ethical Works, and Sermons. (HTML)

Exposition of the Christian Faith. (HTML)

Book I. (HTML)
Chapter XVI. The Arians blaspheme Christ, if by the words “created” and “begotten” they mean and understand one and the same thing. If, however, they regard the words as distinct in meaning, they must not speak of Him, of Whom they have read that He was begotten, as if He were a created being. This rule is upheld by the witness of St. Paul, who, professing himself a servant of Christ, forbade worship of a created being. God being a substance pure and uncompounded, there is no created nature in Him; furthermore, the Son is not to be degraded to the level of things created, seeing that in Him the Father is well pleased. (HTML)
CCEL Footnote 1854 (In-Text, Margin)

106. Moreover, how can there be any created nature in God? In truth, God is of an uncompounded nature; nothing can be added to Him, and that alone which is Divine hath He in His nature; filling all things,[Isaiah 6:3] yet nowhere Himself confounded with aught; penetrating all things, yet Himself nowhere to be penetrated; present in all His fulness at one and the same moment, in heaven, in earth, in the deepest depth of the sea, to sight invisible, by speech not to be declared, by feeling not to be measured; to be followed by faith, to be adored with devotion; so that whatsoever title excels in depth of ...

Nicene and Post-Nicene Fathers, Series 2, Volume 10, page 238, footnote 2 (Image)

Ambrose: Select Works and Letters

Dogmatic Treatises, Ethical Works, and Sermons. (HTML)

Exposition of the Christian Faith. (HTML)

Book II. (HTML)
Chapter XII. Do the Catholics or the Arians take the better course to assure themselves of the favour of Christ as their Judge? An objection grounded on Ps. cx. 1 is disposed of, it being shown that when the Son is invited by the Father to sit at His right hand, no subjection is intended to be signified--nor yet any preferment, in that the Son sits at the Father's right hand. The truth of the Trinity of Persons in God, and of the Unity of their Nature, is shown to be proved by the angelic Trisagion. (HTML)
CCEL Footnote 2057 (In-Text, Margin)

106. But wherefore roam so far afield? Thou hast looked upon all around thee, thou hast seen the Judge, thou hast remarked the angels proclaiming Him. They praise, and thou revilest Him! Dominations and powers fall down before Him—thou speakest evil of His Name! All His Saints adore Him, but the Son of God adores not, nor the Holy Spirit. The seraphim say: “Holy, Holy, Holy!”[Isaiah 6:3]

Online Dictionary & Commentary of Early Church Beliefs