The Investiture Controversy — Pope Gregory VII and Emperor Henry IV (1075–1077 CE)¶

Author: Pope Gregory VII and Holy Roman Emperor Henry IV Type: Primary Source · Political Correspondence Era/Period: WH Era 2 — Middle Ages and Early Modern Standards: WH.6_12.2 · WH.6_12.3 · WH.6_12.5 · R.9 · W.4

What This Text Is About¶

The Investiture Controversy was a power struggle between the Pope and the Holy Roman Emperor over who had the right to appoint (invest) bishops and church officials. In 1075, Pope Gregory VII declared that only the Pope could appoint bishops — directly threatening the Emperor's control over church offices across his kingdom. Emperor Henry IV responded furiously, and Gregory excommunicated him. The exchange of letters between them is one of the most dramatic confrontations in medieval history: two of the most powerful men in Europe arguing over the fundamental question of who runs the world — God's representative in Rome, or God's representative on the throne.

Read It¶

All three documents are public domain, available from the Fordham Internet Medieval Sourcebook and similar archives. Text adapted for clarity.

Document 1 — The Dictatus Papae (March 1075)¶

Pope Gregory VII's Assertion of Papal Authority¶

In 1075, Gregory VII inserted into his papal register a list of 27 claims about papal authority. These became known as the Dictatus Papae — "the Pope's dictates." They are not addressed to Henry specifically, but they set up the conflict. Note that Gregory does not argue these positions — he simply declares them.

1. That the Roman church was founded by God alone.

2. That the Roman pontiff alone is rightly to be called universal.

3. That he alone can depose or reinstate bishops.

4. That his legate, even if of lower grade, takes precedence in a council over all bishops, and can pass sentence of deposition against them.

5. That the pope may depose the absent.

6. That, among other things, we ought not to remain in the same house with those excommunicated by him.

7. That for him alone is it lawful, according to the needs of the time, to make new laws, to assemble together new congregations, to make an abbey of a canonry; and, on the other hand, to divide a rich bishopric and unite the poor ones.

8. That he alone may use the imperial insignia.

9. That of the pope alone all princes shall kiss the feet.

10. That his name alone shall be spoken in the churches.

11. That this is the only name in the world.

12. That it may be permitted to him to depose emperors.

13. That he may be permitted to transfer bishops if need be.

14. That he has power to ordain a clerk of any church he may wish.

15. That he who is ordained by him may preside over another church, but may not hold a subordinate position; and that such a one may not receive a higher grade from any bishop.

16. That no synod shall be called a general one without his order.

17. That no chapter and no book shall be considered canonical without his authority.

18. That a sentence passed by him may be retracted by no one; and that he himself, alone of all, may retract it.

19. That he himself may be judged by no one.

20. That no one shall dare to condemn one who appeals to the apostolic chair.

21. That to the latter should be referred the more important cases of every church.

22. That the Roman church has never erred; nor will it err to all eternity, the Scripture bearing witness.

23. That the Roman pontiff, if he have been canonically ordained, is undoubtedly made a saint by the merits of St. Peter; St. Ennodius, bishop of Pavia, bearing witness, and many holy fathers agreeing with him. As is contained in the decrees of Pope Symmachus the saint.

24. That, by his command and consent, it may be lawful for subordinates to bring accusations.

25. That he may depose and reinstate bishops without assembling a synod.

26. That he who is not at peace with the Roman church shall not be considered catholic.

27. That he may absolve subjects from their fealty to wicked men.

Document 2 — Emperor Henry IV to Pope Gregory VII (January 24, 1076)¶

Henry's furious letter, written after Gregory threatened to excommunicate him. Henry begins by refusing to acknowledge Gregory's legitimacy as Pope — calling him not "Pope Gregory" but by his personal name, Hildebrand. This was a calculated insult.

Henry, king not through usurpation but through the holy ordination of God, to Hildebrand, at present not pope but false monk.

Such greeting as this hast thou merited through thy disturbances, inasmuch as there is no grade in the church which thou hast omitted to make a partaker not of honour but of confusion, not of benediction but of malediction.

For, to mention few and especial cases out of many, not only hast thou not feared to lay hands upon the rulers of the holy church — the archbishops, namely, bishops, and priests, anointed of the Lord as He is — but thou hast trodden them under foot like slaves who know not what their lord may be doing. In crushing them thou hast gained for thyself acclaim from the mouth of the rabble; thou hast judged that all these knew nothing, while thou alone knewest everything.

This condemnation thou hast used as a weapon against us also who, though unworthy to be among the anointed, have nevertheless been anointed to the kingly office; who, as the tradition of the holy fathers teaches, declaring that I cannot be deposed for any crime unless, far be it from God, I should have strayed from the faith — am subject to the judgment of God alone.

For the true pope, St. Peter, cries out: "Fear God, honor the king." But thee, who dost not fear God, dost dishonor in me his appointed one. Wherefore St. Paul, when he has not spared an angel of heaven if he shall have preached otherwise, has not excepted thee also who dost teach otherwise upon earth.

Come down, then, from that apostolic seat which thou hast arrogated. Let another ascend the throne of St. Peter, who shall not practice violence under the cloak of religion, but shall teach the sound doctrine of St. Peter. I, Henry, king by the grace of God, do say unto thee, together with all our bishops: Descend, descend, to be damned throughout the ages.

Document 3 — Pope Gregory VII — Excommunication of Henry IV (February 22, 1076)¶

Gregory's response to Henry's letter. He does not respond to Henry's arguments — instead he addresses St. Peter and God, using them as witnesses to what he is about to do. Then he removes Henry's authority, releasing all of Henry's subjects from their oaths of loyalty.

O St. Peter, prince of apostles, incline to us, I beg, thy holy ears, and hear me, thy servant, whom thou hast nourished from infancy and whom, until this day, thou hast freed from the hand of the wicked who have hated and do hate me for my faithfulness to thee.

Thou art my witness, as are also my lady, the mother of God, and the blessed Paul thy brother, and all the saints, that thy Holy Roman Church drew me to its helm against my will; that I had no thought of ascending thy chair by force, and that I would rather have ended my life as a pilgrim than, by secular ambitions, to have seized thy throne for the sake of earthly glory.

Therefore, by thy grace and not by any works of mine, I believe it to be and it is thy power to bind and loose in Heaven and on earth.

Relying upon this belief, for the honor and defense of thy church, in the name of omnipotent God, the Father, Son, and Holy Ghost, through thy power and authority, I deprive King Henry, son of the emperor Henry, who has rebelled against thy church with unheard-of audacity, of the government over the whole kingdom of Germany and Italy, and I release all Christian men from the allegiance which they have sworn or may swear to him, and I forbid anyone to serve him as king.

For it is fitting that he who seeks to diminish the glory of thy church should lose the glory which he seems to have.

And, since he has refused to obey as a Christian should, or to return to the God whom he has abandoned by taking part with excommunicated persons, by committing many iniquities, and by despising my warnings which, as thou knowest, I issued to him for his soul's welfare; and since he has separated himself from thy church and tried to rend it asunder — I bind him in the bonds of anathema in thy stead and I bind him thus as commissioned by thee, that the nations may know and be convinced that thou art Peter and that upon thy rock the Son of the living God has built His church and the gates of hell shall not prevail against it.

ELA Standards This Connects To¶

R.9 — All three documents make competing claims about the same question: who has ultimate authority? Students identify each author's claim, evidence, and reasoning, and analyze how each responds (or refuses to respond) to the other's arguments.
R.7 — Henry's letter opens by refusing Gregory's title ("to Hildebrand, at present not pope but false monk"). Gregory's response is addressed not to Henry but to St. Peter. Both are rhetorical strategies — students analyze what each choice communicates and to whom.
W.4 — The exchange models the structure of a high-stakes argument: assertion of authority, attack on the opponent's legitimacy, invocation of shared values (Scripture, tradition, God), and a final declarative statement. Students can use this exchange as a model for argumentative writing.

WH.6_12.2 — The Investiture Controversy is the definitive example of how medieval Christianity was not only a religion but a political system. The Pope claiming the right to depose emperors — and being taken seriously — only makes sense in a world where the church controlled eternal salvation, literacy, and moral authority simultaneously.
WH.6_12.3 — The question at the heart of this exchange is the question of medieval political systems: in a world where the king rules by divine right, what happens when the divine representative (the Pope) withdraws that right? This is a constitutional crisis in the most literal sense.
WH.6_12.5 — The Investiture Controversy ended (for now) with the Concordat of Worms (1122), which created a compromise that would shape church-state relations for centuries. Students trace the causes of the conflict and the long-term effects of the compromise.

Key Vocabulary¶

Term	Definition
Investiture	The ceremony in which a king granted church offices (bishop, abbot) by handing a staff and ring to the appointee — what Gregory VII wanted to forbid
Excommunication	Being expelled from the Catholic Church — meaning no sacraments, no salvation, and in the medieval world, a signal to subjects that their loyalty to the excommunicated person was void
Lay investiture	The appointment of church officials by secular (non-church) rulers — the specific practice at the heart of this controversy
Holy Roman Emperor	The ruler of the Holy Roman Empire — a confederation of central European territories; the most powerful secular ruler in Western Europe
Dictatus Papae	"The Pope's dictates" — Gregory VII's 1075 list of assertions about papal authority, including the claim that the Pope could depose emperors
Simony	The buying and selling of church offices — a widespread abuse that Gregory's reform movement (the Gregorian Reform) was trying to eliminate
Anathema	A formal curse by the church — stronger than excommunication; a declaration that someone is utterly separated from God and the church

Key Passage¶

I deprive King Henry, son of the emperor Henry, who has rebelled against thy church with unheard-of audacity, of the government over the whole kingdom of Germany and Italy, and I release all Christian men from the allegiance which they have sworn or may swear to him, and I forbid anyone to serve him as king. — Gregory VII, Excommunication of Henry IV, February 1076

This is the sentence that made European kings afraid of excommunication for the next four centuries. Gregory is not just punishing Henry spiritually — he is telling every baron, bishop, and lord in the Holy Roman Empire that their oaths to Henry are void. He is dismantling the entire feudal structure of loyalty by religious command.

Studio Ideas¶

"Who Has the Right to Rule?" — EQ: Where does political authority come from? · Standard: WH.6_12.2 + WH.6_12.3 · Demo Mode: Verbal Conversation (Socratic seminar: Henry says his authority comes from God's "holy ordination." Gregory says his authority comes from St. Peter and therefore from God. Both cannot be right. How do you decide? What would be needed — in the medieval world — to prove which authority is higher?)
"Reading the Letters as Argument" — EQ: How does an author try to win an argument they can't prove by evidence? · Standard: R.9 + W.4 · Demo Mode: Written Assessment (Henry and Gregory both appeal to authority (Scripture, tradition, God's will) rather than evidence. Map each document: what is the claim? What is the support? What is the weakness? Then write your own short declaration of authority using the same structure.)
"Walking to Canossa" — EQ: What does it look like when political power breaks down? · Standard: WH.6_12.5 · Demo Mode: Written Assessment (After this exchange, Henry's barons began to rebel. Henry was forced to walk barefoot in the snow to Canossa, Italy, to beg Gregory's forgiveness and have his excommunication lifted. Research what happened at Canossa. Write a W.4 argument: did Gregory win the Investiture Controversy, or did Henry? Who made the better long-term decision?)

Why This Is Relevant Today?¶

The Investiture Controversy was about who gets to appoint bishops — but the underlying question was: when religious authority and political authority conflict, which one wins? That question never went away. In the U.S., debates about whether religious institutions must follow civil rights laws (in hiring, in healthcare delivery, in adoption services) are the Gregory vs. Henry dispute in modern form. In countries where religious law and state law coexist — Iran's constitutional structure, Saudi Arabia's governance, Israel's rabbinic courts — the medieval question is a live constitutional issue. The concept of "two swords" — that spiritual and temporal power are separate domains that must somehow cooperate — is the ancestor of the separation of church and state, which is itself a contested principle everywhere religion and politics intersect. This correspondence shows that the church-state question is not a modern invention: it was fought, produced real political consequences, and generated compromises before the Reformation even began.