The Black Mass is a ceremony said to parody or invert the Catholic Mass, usually in honor of Satan. For centuries it existed mainly as an accusation made against heretics and alleged witches. The best-documented historical case comes from seventeenth-century France, while openly performed Black Masses are largely a modern phenomenon shaped by nineteenth-century literature.
Black Mass at a glance
| Type | Parody or inversion of the Catholic Mass |
|---|---|
| Early literary sources | Witch-hunting texts of the 15th and 16th centuries |
| Famous case | Affair of the Poisons, France (1677-1682) |
| Key novel | J.-K. Huysmans, La-bas (1891) |
| Modern practice | Performed by some Satanist groups since the 1960s |
| Scholarly view | Little reliable evidence before the 17th century |
Definition
In popular imagination a Black Mass involves a defrocked priest, an altar, reversed prayers and the desecration of a consecrated host. Historians of religion treat the term more carefully. It covers three different things: accusations that heretics or witches profaned the Eucharist, a small number of documented rituals that misused the Mass for magical ends, and deliberate modern performances meant to mock Christianity or to express Satanist beliefs.
Distinguishing these strands matters, because many details that appear in modern descriptions come from fiction or from confessions obtained under torture rather than from independent evidence.
Accusations in the medieval and early modern world
From late antiquity, church writers accused rival sects, such as the Borborites, of obscene rites involving the Eucharist. Similar charges were later brought against medieval groups including the Bogomils and the Cathars. Such claims were a standard polemical weapon and are not considered reliable descriptions.
In the Middle Ages, students and wandering clerics also wrote comic Latin parodies of the liturgy, such as drinkers' and gamblers' Masses found in the Carmina Burana. These were satire, not devil worship. During the era of witch trials, demonological works including the Malleus Maleficarum (1487) and later French treatises described witches' sabbaths with inverted rites. Concepts like the Devil's mark belong to the same body of accusation, and historians generally regard these descriptions as products of learned theology and interrogation rather than of real gatherings.
The Affair of the Poisons
The clearest early evidence comes from Paris in the reign of Louis XIV. Between 1677 and 1682 a royal commission investigated a network of fortune-tellers and poison sellers. Catherine Monvoisin, known as La Voisin, was executed in 1680. Testimony given to the investigators claimed that the priest Etienne Guibourg had said Masses over the bodies of women for love magic, and some witnesses implicated the king's mistress, Madame de Montespan.
How much of this testimony was true is still debated. Much of it was given by accused people under great pressure, and the king ordered parts of the records sealed. Even so, the case shows that the misuse of the Mass for magical purposes was at least believed to be real in seventeenth-century Paris.
Literature and the nineteenth-century image
The modern picture of the Black Mass was largely created by writers. The historian Jules Michelet presented the witches' rite as a peasant revolt against the church in La Sorciere (1862). Joris-Karl Huysmans' novel La-bas (1891) described a Black Mass in vivid detail and inspired rumors about Satanist circles in Paris. Journalistic hoaxes of the same era, notably the Taxil affair, added further invented detail. Occult writers of the twentieth century, including authors discussed under Lewis Spence, often repeated this material as though it were historical fact.
How historians assess the evidence
Scholars of witchcraft and religion, such as Jeffrey Burton Russell and Ronald Hutton, have emphasized how little independent evidence supports the idea of an organized, continuous tradition of Satanic Masses before modern times. The same stock details recur across centuries of accusations, which suggests they were copied from one text to another. Confessions were frequently shaped by leading questions from interrogators who already knew what they expected to hear.
At the same time, historians accept that individuals did sometimes misuse sacraments for private magic, for example by stealing consecrated hosts for love charms or healing spells. Church courts prosecuted such acts. The gap between these small-scale abuses and the elaborate ritual of popular legend is one of the main points modern research has clarified.
Modern Satanism and controversy
Openly performed Black Masses appear mainly after the founding of the Church of Satan by Anton LaVey in 1966. LaVey's The Satanic Rituals (1972) presented a version as a psychodrama intended to free participants from religious conditioning. Other Satanist and theatrical groups have staged similar ceremonies, often as provocation or protest.
These events regularly draw objections from Catholics, for whom desecrating the Eucharist is a grave offense. In 2014 a planned reenactment associated with a Harvard student club was relocated and then largely called off after widespread protest. Such episodes show that the Black Mass remains primarily a symbolic act of opposition to Christianity, defined by what it inverts. It is also associated in the popular mind with the tarot card The Devil, although the card itself has no link to any liturgy.
Related entries
On The Mystica today: The Devil tarot card
Frequently asked questions
Did Black Masses really happen in the Middle Ages?
There is little reliable evidence for them. Medieval descriptions are mostly accusations against heretics or witches, often extracted under torture or written as polemic. Comic parodies of the liturgy existed, but they were satire. The first case with substantial documentation is the Affair of the Poisons in 1670s France.
Who was involved in the Affair of the Poisons?
The investigation centered on Catherine Monvoisin (La Voisin), a Parisian fortune-teller and poison seller executed in 1680, and on the priest Etienne Guibourg, who was accused of saying Masses for love magic. Witnesses also implicated Madame de Montespan, mistress of Louis XIV, though her role remains disputed.
Do Satanists perform Black Masses today?
Some do. Since the Church of Satan was founded in 1966, various Satanist and theatrical groups have staged Black Masses, usually as symbolic rebellion against Christianity. Many modern Satanists are atheistic and treat the rite as psychodrama or protest. Other Satanist groups do not practice it at all.
Sources and further reading
- Black Mass · Wikipedia
- Black mass (Satanic rite) · Encyclopaedia Britannica
- Messa nera · Wikipedia (Italian)
This entry replaces an article from the original Mystica encyclopedia (online since 2001). It was rewritten from the sources above by The Mystica Editorial Team under our editorial standards. Last reviewed: September 30, 2026.