Hypostatic Union in Early Christian Writings
Early Christians taught that Jesus Christ is one person, fully God and fully man. Writers like Ignatius, Irenaeus, Tertullian, Hippolytus, Novatian, and Gregory Thaumaturgus used John 1:14, Philippians 2, and Colossians 2:9 to explain this. Some of the strongest lines speak of the Word made flesh and of the Son joined to humanity without losing his divinity. The main evidence is broad and strong, though a few cards are only supporting or indirect.
151 early-church witnesses · 251 source quotations · compared with Scripture
What did early Christians believe about the Hypostatic Union?
Early Christians did teach that Jesus Christ is one person who is fully divine and fully human, and they often said this by quoting John 1:14, Philippians 2:6-8, and Colossians 2:9. Ignatius, Irenaeus, Tertullian, Hippolytus, Novatian, and Gregory Thaumaturgus all speak of the Word becoming flesh and of the Son being truly God and truly man.
The evidence is broad across the 2nd and 3rd centuries, and several writers also reject views that would split Christ into two persons or turn his flesh into something unreal. The clearest wording for the hypostatic union itself appears in Irenaeus and Gregory Thaumaturgus, while some other cards are only indirect or use related language about union, body, flesh, or divinity.
Many more early Christian quotations, Bible passages, and source links are gathered below so you can study the evidence for yourself.
Key Takeaways
- Ignatius, Irenaeus, Tertullian, Hippolytus, Novatian, and Gregory Thaumaturgus all give early witness to Christ as truly God and truly man.
- John 1:14 is the main Bible passage used again and again: the Word became flesh.
- Irenaeus uses the phrase 'physical and hypostatic union,' making him a key early witness for this topic.
- Several writers also reject ideas that divide Christ or deny his real flesh.
Questions Answered by the Sources
Did early Christians say the Word truly became flesh?
Several early writers directly say that the Word or Son was made flesh and dwelt among us. The Bible passages in the supplied set center on John 1:14 and closely related texts about the Word's manifestation in the flesh.
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Gregory Thaumaturgus, On the Trinity Direct teaching
But the person of the Son is composite in its oneness (unita est), being one made up of two, that is, of divinity and humanity together, which two constitute one.
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Philippians 2:7 Background
but made Himself of no reputation, taking the form of a bondservant, and coming in the likeness of men.
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Colossians 2:9 Background
For in him dwelleth all the fulness of the Godhead bodily.
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1 Timothy 2:5 Background
For there is one God, and one mediator between God and men, the man Christ Jesus;
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Philippians 2:6 Background
who, though he was in the form of God, did not count equality with God a thing to be grasped,
More related quotations from this section 2 shown
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Methodius, Concerning Free Will Supporting witness
both things therefore are together proved, that He was God by nature, and was made man by nature.
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Lactantius, The Epitome of the Divine Institutes Supporting witness
The same person is the son of God and of man.
Did early Christians teach that Christ was both God and man?
The supplied sources repeatedly describe Jesus Christ as both divine and human, not merely human or merely divine. This appears in early Christian confessions, commentary, and anti-heretical writings, alongside Bible passages such as 1 Timothy 3:16, Colossians 2:9, Philippians 2:6-8, and 1 Timothy 2:5.
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Tertullian, On the Flesh of Christ Background
But by saying made, he not only confirmed the statement, The Word was made flesh, John 1:14 but he also asserted the reality of the flesh which was made of a virgin.
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Novatian, Treatise Concerning the Trinity Direct teaching
And so John also, describing the birth of Christ, says, "The Word was made flesh, and dwelt among us, and we saw His glory, the glory as of the only begotten of the Father, full of grace and truth." Moreover, His name is called the Word of God in Revelation 19:13, and not without reason. "My heart has emitted a good word." Afterward he then calls that word by the name of the King by implication: "I will tell my works to the King." For by Him all things were made, and without Him nothing was made, as John 1:3 says. Whether they are thrones or dominions, or powers, or mights, visible things or invisible, all things subsist by Him, as the apostle says in Colossians 1:16. Moreover, this is that Word which came to His own, and His own did not receive Him. For the world was made by Him, and the world did not know Him, as John 1:10-11 says. Moreover, this Word was in the beginning with God, and God was the Word, as John 1:1 says. Who then can doubt, when it is said in the last clause, "The Word was made flesh, and dwelt among us," that Christ, whose birth is being described, is man because He was made flesh? And because He is the Word of God, who can shrink from declaring without hesitati
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Victorinus, Commentary on the Apocalypse Supporting witness
And so John also, while describing the birth of Christ, says, “The Word was made flesh, and dwelt among us, and we saw His glory, the glory as of the only begotten of the Father, full of grace and truth.” For His name is also called “the Word of God,” in Revelation 19:13, and not without reason. “My heart has uttered a good word.” He then afterward calls this word by the name of the King indirectly: “I will tell my works to the King.” For by Him all works were made, and without Him nothing was made, as John 1:3 says. “Whether,” says the apostle, “they are thrones or dominions, or powers, or mights, visible things and invisible, all things subsist by Him,” as Colossians 1:16 says. Moreover, this is that Word which came to His own, and His own did not receive Him. For the world was made by Him, and the world did not know Him, as John 1:10-11 says. Moreover, this Word was in the beginning with God, and God was the Word, as John 1:1 says. Who then can doubt, when in the last clause it is said, “The Word was made flesh, and dwelt among us,” that Christ, whose birth is being described, is man because He was made flesh? And because He is the Word of God, who can shrink from declaring with
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Dionysius of Alexandria, Miscellaneous Fragments Supporting witness
... eyes, which we have looked upon, and our hands have handled, of the Word of life; and the life was manifested.” For these things are introduced as a preface, and in opposition, as he shows later, to those who deny that the Lord has come in the flesh. For this reason he has also carefully added these words: “And that which we have seen we testify, and show to you that eternal life which was with the Father, and was manifested to us; that which we have seen and heard declare we to you.” So he stays with his subject, and does not wander away from it inconsistently, but goes through all of it under the same main points and with the same kinds of expressions, some of which we will briefly mention. Thus the careful reader will find the phrases “the life” and “the light” appearing often in both. He will also find expressions such as fleeing from darkness, holding the truth, grace, joy, the flesh and blood of the Lord, the judgment, the remission of sins, the love of God toward us, and the commandment that we should love one another. There is also the teaching that we ought to keep all the commandments, and the conviction of the world, of the devil, and of Antichrist; the promise of th
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Origen, Commentary on John Supporting witness
"And the Word was with God, and the Word was God." In the section before this, my revered brother Ambrosius, brother formed according to the Gospel, we discussed, as far as we are able at present, what the Gospel is, and what the beginning is in which the Word was, and what the Word is that was in the beginning. Now we come to consider the next point before us: how the Word was with God. For this purpose, it will help to remember that what is called the Word came to certain persons. For example, "The Word of the Lord," in Hosea 1:1, came to Hosea the son of Beeri; and "The Word," in Isaiah 2:1, came to Isaiah the son of Amos, concerning Judah and concerning Jerusalem; and "The Word which came to Jeremiah," in Jeremiah 14:1, was concerning the drought. We must ask how this Word came to Hosea, and how it also came to Isaiah the son of Amos, and again to Jeremiah concerning the drought. The comparison may help us find out how the Word was with God. Most people will simply look at what the prophets said, as if that were the Word of the Lord, or the Word, that came to them. But perhaps, just as we say that one person comes to another, the Son, the Word, of whom we are now speaking theol
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Origen, Commentary on John Supporting witness
We cannot fail to see that it is as a man that He is Christ, in respect of His soul, which was human and liable to be troubled and sore vexed, but that He is conceived as king in respect of the divine in Him.
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Irenaeus, Against Heresies: Book I Supporting witness
For, summing up his statements respecting the Word previously mentioned by him, he further declares, “And the Word was made flesh, and dwelt among us.” But, according to their hypothesis, the Word did not become flesh at all, inasmuch as He never went outside of the Pleroma, but that Saviour [became flesh] who was formed by a special dispensation [out of all the Æons], and was of later date than the Word.
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Irenaeus, Against Heresies: Book III Supporting witness
while the Gospel affirms plainly, that by the Word, which was in the beginning with God, all things were made, which Word, he says, “was made flesh, and dwelt among us.”
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Irenaeus, Against Heresies: Book III Supporting witness
and His salvation—that is, His Word —He caused to be made visible to all flesh, [the Word] Himself being made incarnate, that in all things their King might become manifest.
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Lactantius, The Divine Institutes Supporting witness
He therefore assumed a body, and was clothed in a garment of flesh, that He might hold out to man, for whose instruction He had come, examples of virtue and incitements to its practice.
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Gregory Thaumaturgus, Twelve Topics on the Faith Supporting witness
If any one affirms that the flesh of Christ is consubstantial with the divinity, and refuses to acknowledge that He, subsisting Himself in the form of God as God before all ages, emptied Himself and took the form of a servant, even as it is written, let him be anathema.
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Ignatius, Epistles of Ignatius Supporting witness
For “the Word became flesh.” For “Wisdom builded for herself a house.” And God the Word was born as man, with a body, of the Virgin, without any intercourse of man.
More related quotations from this section 1 shown
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John 1:14 Direct teaching
And the Word was made flesh, and dwelt among us, (and we beheld his glory, the glory as of the only begotten of the Father,) full of grace and truth.
Did any early Christian writer use language like hypostatic union?
Yes. Irenaeus gives the clearest early wording when he says the Word became one with flesh by a 'physical and hypostatic union.' Later writers like Gregory Thaumaturgus and Cyprian also speak of Christ as joined in one reality, though their wording is less exact.
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Irenaeus, Fragments from the Lost Writings of Irenæus Direct teaching
but the iron, the heavier one, floated: so, when the Word of God became one with flesh, by a physical and hypostatic union, the heavy and terrestrial [part], having been rendered immortal, was borne up into heaven, by the divine nature, after the resurrection.
Did early Christians reject the idea that Christ was two separate persons?
Yes. Tertullian argues that Christ must not be treated as a third thing made from two parts, and Novatian insists on the divinity of the Word in the very materiality of his body. Hippolytus and Ignatius also speak in a way that keeps Christ's divinity and humanity together in one Lord.
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Tertullian, Against Praxeas Direct teaching
...by a change and transformation of substance, then it follows at once that Jesus must be a substance made up of two substances, flesh and spirit, a kind of mixture, like electrum, made of gold and silver. Then it begins to be neither gold, that is, spirit, nor silver, that is, flesh. One is changed by the other, and a third substance is produced. Therefore, on this view, Jesus cannot be God, for He has stopped being the Word, which was made flesh. Nor can He be Man incarnate, for He is not truly flesh, and it was flesh that the Word became. Being made up of both, then, He is actually neither one. He is rather some third substance, very different from either. But the truth is that we find Him clearly presented as both God and Man. The very psalm we quoted indicates, concerning the flesh, that God became man in the midst of it. “He therefore established it by the will of the Father.” Certainly, then, He is in every respect both the Son of God and the Son of Man, being God and Man. No doubt they differ according to each substance and its own special property, since the Word is nothing other than God, and the flesh is nothing other than Man. In this way the apostle also teaches about
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Novatian, Treatise Concerning the Trinity Supporting witness
and lest we should seem to have afforded them any ground for objecting, we do not so express doctrine concerning the substance of His body, as to say that He is only and alone man, but so as to maintain, by the association of the divinity of the Word in that very materiality, that He was also God according to the Scriptures.
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Hippolytus, Against the Heresy of Noetus Supporting witness
for in that He had the heavenly (nature) of the Father, as the Word and the earthly (nature), as taking to Himself the flesh from the old Adam by the medium of the Virgin, He now, coming forth into the world, was manifested as God in a body, coming forth too as a perfect man.
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Ignatius of Antioch, Connection to John 1:14 Supporting witness
For "the Word was made flesh." Being incorporeal, He was in the body; being impassible, He was in a passible body; being immortal, He was in a mortal body; being life, He became subject to corruption, that He might free our souls from death and corruption, and heal them, and might restore them to health, when they were diseased with ungodliness and wicked lusts.
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Lactantius, The Divine Institutes Supporting witness
He became both the Son of God through the Spirit, and the Son of man through the flesh — that is, both God and man.
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Alexander of Alexandria, Epistles on the Arian Heresy Supporting witness
For Christ, when He joined the manhood to His person, united that which death by the separation of the body had dispersed. Christ suffered that we should live forever.
Did the early church teach that Jesus had a real human body and flesh?
Yes. Ignatius says Christ truly assumed a body, Tertullian defends the reality of Christ's flesh, and Lactantius says he assumed a body and was clothed in flesh. These writers use the reality of Jesus' body to guard the truth of his saving work.
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Tertullian, On the Flesh of Christ Supporting witness
This property of the two states — the divine and the human— is distinctly asserted with equal truth of both natures alike, with the same belief both in respect of the Spirit and of the flesh.
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Ignatius, Epistle to the Trallians (LongVersion) Supporting witness
He truly assumed a body; for “the Word was made flesh,” and lived upon earth without sin.
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Clement of Alexandria, The Instructor (Paedagogus) Supporting witness
The food — that is, the Lord Jesus — that is, the Word of God, the Spirit made flesh, the heavenly flesh sanctified.
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Gregory Thaumaturgus, A Sectional Confession of Faith Supporting witness
And we further acknowledge that the Word was made flesh, and was manifested in the flesh-movement received of a virgin, and did not simply energize in a man.
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Hippolytus, Exegetical Fragments Supporting witness
When he came into the world, He was manifested as God and man.
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1 John 4:3 Background
and every spirit that does not confess that Jesus Christ has come in the flesh is not of God. And this is the spirit of the Antichrist, which you have heard was coming, and is now already in the world.
More related quotations from this section 2 shown
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Philippians 2:8 Background
And being found in human form, he humbled himself by becoming obedient to the point of death, even death on a cross.
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1 Timothy 3:16 Background
And without controversy great is the mystery of godliness: God was manifested in the flesh, Justified in the Spirit, Seen by angels, Preached among the Gentiles, Believed on in the world, Received up in glory.
Common Questions
Did early Christians believe Jesus was both God and man?
Yes. Early Christian writers repeatedly said the Word was made flesh and that Christ is both God and man.
Which Bible passages did they use most for this belief?
John 1:14, Philippians 2:6-8, Colossians 2:9, and 1 Timothy 3:16 are the main passages in these cards.
Did any early writer use the words 'hypostatic union'?
Yes. Irenaeus uses the phrase 'physical and hypostatic union' in the supplied excerpt.
Source Index for the Hypostatic Union
The guided sections above show the strongest quotations. This compact index highlights 160 ranked source links from 251 compiled sources for deeper study.
Source index 160 ranked links shown
Early Christian Writings 80 shown of 151
Primary-source quotations from early Christian writers and church documents.
Bible Passages 80 shown of 100
Related Bible passages saved for comparison with the early Christian quotations.