Priscillianism (370-561)

An aristocrat turned apostle of asceticism

Priscillian was born c. 340 into a family of the senatorial nobility of Spain — Prosper calls him a native of Galicia (de Gallaecia): Sulpicius Severus, our principal witness and his contemporary, describes him as a man of noble birth and great wealth, keen, restless, eloquent, steeped in reading, formidable in debate.^[6] A cultivated Christian, around 370 he gathered a circle of ascetics — clergy and laypeople, including two bishops, Instantius and Salvianus — who practised continence, abstinence from meat and wine, rigorous fasting, and fervent study of the Scriptures.^[7]

“A man of noble birth, of great wealth, keen, restless, eloquent, instructed by extensive reading, very quick to dispute and discussion.” — Sulpicius Severus, Chronicle, II, 46 (author's translation from the Latin)^[8]

His prestige rested on two things: exceptional gifts as an orator and a reputation for extreme asceticism.^[9] Crowds flocked to his meetings, even in the countryside; his enemies saw in them a sect bound by oath; his supporters, a Church of saints returned to the Gospel. On the way to Rome, in 381, the party stayed on the Aquitanian estate of the widow Euchrotia — in agro Euchrotiae (Sulpicius, II, 48) — who, with her daughter Procula, then joined the movement.^[10]

Mark of Memphis, Agape and Elpidius: the alleged channel

Where did the doctrine come from? Sulpicius Severus traces the channel: a certain Mark, an Egyptian from Memphis, is said to have brought Gnostic-Manichaean doctrines to Spain; his first followers were a lady named Agape and a rhetorician named Helpidius (Elpidius); it was through their influence that Priscillian was “enrolled.”^[11] Modern historians remain cautious about this genealogy — it resembles the usual device of giving every heresy a foreign father — but it at least attests this: from the outset, contemporaries recognised in the movement identifiable Gnostic themes, not merely a misguided ascetic fervour.^[12]

What Priscillian preached in the public squares

In practice, the preacher called people to abandon the city churches for rural retreats, to fast on Sundays — a day of paschal joy on which the Church forbids fasting — and even on Christmas day, to receive the Eucharist without consuming it in the assembly, to read the apocryphal writings on a par with the canonical ones, and to hold nocturnal meetings mixing men and women.^[13] Women held a visible place in the party — Agape from the beginning, then Euchrotia and Procula — and the nocturnal meetings mixing men and women caused as much scandal as admiration.^[14] His accusers added infamous charges — magic, astrology, nocturnal debauchery, ritual nudity — some of which doubtless amounts to slander, but whose core — magic and nocturnal meetings — would be upheld as proven by Evodius at Trier.^[15]

The dualism of Light and Darkness

The substance of the doctrine, as the councils and St Leo defined it, is a Gnostic-Manichaean dualism: there are two kingdoms, that of Light and that of Darkness; angels and human souls are fragments detached from the divine substance, fallen from heaven and imprisoned in material bodies; man thus bears both kingdoms within him, and his salvation consists in freeing himself from the dominion of matter.^[16] The Old Testament is accepted, but the account of creation is rejected — a good God could not have made this evil matter — and the literal sense of Scripture is systematically set aside in favour of an unrestrained allegorical exegesis: when the text resists, a personal inspiration is invoked to settle the matter.^[17]

The Twelve Patriarchs against the Twelve Signs of the Zodiac

The conflict of the two kingdoms is played out within man himself, symbolised on both sides by dozens: on the side of Light, the Twelve Patriarchs, heavenly spirits corresponding to the powers of the soul; on the side of Darkness, the twelve signs of the zodiac, symbols of matter and of the lower kingdom.^[18] The twelve heavenly spirits having failed to deliver souls, the Saviour came in a heavenly body, outwardly like our own, and by his teaching and his apparent death snatched souls from the grip of the material.^[19] As for the stars, they do not merely influence: each part of the body and soul is assigned to a sign, and the destiny of the soul is read in the heavens — an astrological determinism which the First Council of Braga would condemn by name.^[20]

A Trinity of a Single Face and a Soul Consubstantial with God

Concerning God himself, the Priscillianists taught an error the West already knew as Sabellianism: the three names of the Trinity — Father, Son and Holy Spirit — denoted only one and the same person.^[21] And the human soul, a fallen divine fragment, was said to be of the same substance as God — consubstantial with the Creator — a thesis Orosius denounced to Augustine in 414 as the heart of the system, and which Augustine refuted the following year.^[22] As for Christ, he supposedly did not take true flesh: having come in an impassible heavenly body, he neither truly suffered nor was truly buried — pure Docetism, which St Leo would refute point by point in 447.^[23]

The morals of an imprisoned soul: fasting, celibacy, meat and wine

From this contempt for matter flowed a spectacular asceticism: absolute continence even within marriage, abstinence from meat and wine, multiplied fasts — including on Sundays and at Christmas, in open breach with common discipline.^[24] Here the historian must distinguish two things: the Church never condemned asceticism in itself — monks and virgins practised it everywhere with her blessing — but she always condemned the contempt for creation which makes matter the work of Evil; yet it was precisely this contempt that grounded Priscillianist asceticism, and it was this that the canons targeted.^[25] Hence the paradox noted by the Fathers: a seemingly superhuman morality, in service of a doctrine that dishonours marriage, food and the body which God made good.^[26]

The following table summarises the errors as struck by the First Council of Braga (561) with seventeen anathemas — the most precise snapshot of what the Church reproached the system with at its twilight.^[27]

The council anathematises anyone who teaches the theses below; each restates a point attested in the Priscillianist dossier since the 4th century.

|| Error condemned at Braga (561) | Content | Earlier attestation | || --- | --- | --- | || The Sabellian Trinity | Father, Son and Spirit: three names of a single person | Denounced from the 4th century onward | || The soul consubstantial with God | The human soul, of the same substance as the Creator | Orosius to Augustine, 414 | || The astrology of the body | The twelve signs assigned to the limbs and the soul | Doctrine of the dozens | || The impassible Christ | Heavenly body, apparent suffering and death | Not taken up at Braga; cf. St Leo, Letter 15 | || The rejection of creation | Matter, work of Darkness; Genesis account refused | Priscillianist exegesis | || The inspired apocrypha | Apocryphal writings received as Scripture | Reading of the circle, from 370 onward | || Sunday fasting | Fasting on Resurrection day and at Christmas | Practice of the movement | || Contempt for marriage | Continence imposed as the only way | Morals of the circle |

After this table, the scale becomes clear: it is not a point of discipline that separates the Priscillianists from the Church, it is God, Christ, the soul, the body and the Scriptures all at once — a complete parallel Christianity.^[28]

Lying for a holy cause?

The most disturbing feature of the system was its double doctrine: because ordinary men could not understand the higher ways, the “enlightened” were supposedly allowed to conceal and even lie for a holy end — swearing on the Scriptures without feeling bound, denying their faith before judges.^[29] The principle caused scandal even among the faithful: consulted by Consentius, who proposed lying in order to unmask hidden heretics, St Augustine replied with his treatise Against Lying (Contra mendacium, c. 420) — one may never lie, even for a good cause — following his De mendacio (c. 395).^[30] St Jerome, for his part, saw in the school a hotbed of learned magic, speaking of Priscillian as a follower of the magus Zoroaster.^[31]

Hyginus, Idacius, Ithacius: the bishops who raise the alarm

The first to take alarm was Hyginus, bishop of Cordoba, who reported his fears to Idacius (Hydatius), metropolitan bishop of Merida; the latter, joined at his urging by Ithacius, bishop of Ossonoba (present-day Faro, in Lusitania), harassed Instantius and his partisans without measure and beyond what the occasion required — fanning the flames, says Sulpicius, instead of extinguishing them.^[32] A synod then met at Saragossa on 4 October 380, with bishops from Spain but also from Aquitaine — proof that the movement had already spilled over the Pyrenees.^[33] Summoned to appear, the Priscillianist party refused to show up; according to Sulpicius (II, 47), the synod then condemned, by default (in absentes), the four leaders by name — Instantius and Salvianus, bishops, Helpidius and Priscillian, laymen — a sentence that the surviving acts of Saragossa, silent on persons, do not confirm and that the Liber ad Damasum contradicts (Rousselle, p. 87; Gerión 2024; Omissi). The synod accompanied its sentence with eight disciplinary canons targeting the practices without naming persons: prohibition of private meetings, of Sunday fasting, of carrying away the Eucharist.^[34]

The defiance: Priscillian ordained bishop of Avila

Execution of the sentence was entrusted to Ithacius, an impulsive and violent man, who failed to make the condemned yield.^[35] And the excommunicated answered with a spectacular riposte: Priscillian was ordained priest, then appointed bishop of Avila — in open defiance of the synod.^[36] Spain now had a Priscillianist bishop in apparent good standing, backed by two colleagues and by crowds: the affair was no longer a quarrel among ascetics, it was an episcopal schism.^[37]

Damasus refuses an audience, and so does Ambrose

Idacius and Ithacius brought the case before the imperial power: Emperor Gratian promulgated a decree that deprived the Priscillianists of the churches where they had settled and struck Priscillian and his partisans with exile.^[38] Instantius, Salvianus and Priscillian then made their way to Rome to obtain from Pope St Damasus the lifting of the sentence: the audience was refused them.^[39] They tried Milan with St Ambrose, with the same result: identical refusal.^[40] The Church, at its summit, confirmed Saragossa.

The extorted rescript and the triumphant return

The condemned then resorted to intrigue and corruption at court: through Macedonius, master of the offices, they obtained an imperial rescript that not only lifted the exile but reinstated them in their churches in Spain.^[41] Under the protection of imperial officials, their power grew so great that Ithacius himself had to leave the country — the accuser fleeing before the accused.^[42] In turn, Ithacius appealed to Gratian; but before any decision, the emperor was assassinated at Lyon (25 August 383) and the usurper Maximus (Magnus Maximus) — a Spaniard — seized power in the West.^[43] Priscillian returned to Spain triumphantly in late 382, armed with the rescript: never had his star seemed higher — nor closer to going out.^[44]

The synod of Bordeaux: Instantius deposed, the appeal to the emperor

Eager to please the orthodox party — and to refill his treasury through confiscations — Maximus convened a synod at Bordeaux in 384.^[45] Instantius, tried first, was deposed; seeing how things were going, Priscillian, to avoid being heard by the bishops, appealed to the emperor at Trier — ad principem provocavit (Sulpicius, II, 49) — using a procedure that removed the case from the bishops to deliver it to the secular arm.^[46] Ithacius stood forth as accuser before the imperial tribunal, with a vehemence that would scandalize even his friends.^[47]

St Martin of Tours obtains a promise that blood will be spared

St Martin of Tours was then at Trier. Opposed to Priscillian on doctrine, he nonetheless judged it intolerable to bring an ecclesiastical case before a civil court: he intervened with Maximus, rebuked Ithacius for his fury, and obtained from the emperor the promise that the condemnation would not go as far as the shedding of blood — excommunication being punishment enough for the heretic.^[48]

"Martin constantly rebuked (increpare) Ithacius, urging him to drop the accusation, and pressed Maximus with his prayers not to shed the blood of these unfortunates." — Sulpicius Severus, Chronicle, II, 50 (author's translation from the Latin)^[49]

Martin also supported in law what he asked as a favour: once declared heretics by the bishops' sentence and expelled from the churches, the guilty were punished enough — and it was an unprecedented indignity for a secular ruler to judge a case of the Church.^[50]

"It was an infamous and unheard-of indignity for a secular ruler to be judge in an ecclesiastical case." — Sulpicius Severus, Chronicle, II, 50, summarizing Martin's argument (author's translation from the Latin)^[51]

As long as Martin remained at Trier, the trial was deferred. Then he left the city — and two bishops, Magnus and Rufus, turned the emperor away from the clemency Martin had counselled.^[52]

Evodius and the charge of sorcery

Maximus entrusted the investigation to the Praetorian Prefect of Gaul, Evodius (Flavius Euodius), a man of hard and severe character.^[53] In two hearings, Evodius convicted Priscillian of immoral conduct: the accused, Sulpicius reports, did not deny having devoted himself to infamous doctrines, holding nocturnal assemblies of fallen women, and praying in nakedness.^[54] On this report, Evodius declared him guilty — convictumque maleficii (Sulpicius, II, 50) — and sent him back to prison pending consultation with the emperor. The crucial fact: Evodius declared him guilty of infamous morals and sorcery (maleficium), a capital crime — even though heresy was already covered by the imperial constitutions (CTh XVI, 5, notably XVI, 5, 9 of 382): it was as a sorcerer, on a common-law charge, that Priscillian was condemned to death, not on a sentence of heresy — though the doctrinal substance remained at the heart of the case.^[55]

One last twist: Ithacius, realizing the odium that would rebound on him if he appeared as accuser at a capital trial — the trial having to be started over — withdrew from the prosecution; his cunning was in vain, the harm was done: Maximus appointed as accuser a certain Patricius, the treasury advocate, and under this prosecutor Priscillian was condemned to death.^[56]

The beheading and his six companions

On Evodius's report, Maximus had Priscillian and several of his partisans put to death by the sword, in 385 (usual date): with him perished Felicissimus and Armenius, recently rallied clerics, the poet Latronianus and the widow Euchrotia, then the clerics Asarivus and Aurelius the deacon — seven heads; Instantius, already deposed by the bishops, was transported to the island of Sylina, beyond Britain, and Tiberian, stripped of his goods, banished to the same place; the lesser figures, Tertullus, Potamius and Joannes, who had confessed before the trial, were temporarily banished within Gaul.^[57] Euchrotia, who had welcomed the party on her Aquitanian estate in 381 (in agro Euchrotiae, Sulpicius, II, 48), perished with him.^[58] The first blood shed by Christians for a cause of faith had just flowed — and it was bishops who had called for it.^[59]

Martin, Ambrose, Siricius: the condemnation

Ithacius's conduct immediately incurred the severest condemnation. Learning of the execution, Martin returned to Trier and compelled the emperor to revoke the order already given to the military tribunes, on their way to Spain to root out the heresy there: without this return, the massacre would have continued.^[60] St Ambrose broke with the accusers (Letter 30 [24], § 12); according to Healy (1911), Pope St Siricius censured even the emperor himself — the only surviving primary document of this exchange being Maximus's letter (Collectio Avellana 40); and the bishops present at Trier, led by Theognistus, broke communion with Ithacius.^[61] Saints thus condemned the execution as early as 385–388: the case rests on these documents — Martin, Ambrose, Theognistus.

Ithacius deposed, Idatius resigned, Maximus disavowed

Punishment followed: Ithacius was deposed from his see by a synod of Spanish bishops, and his second, Idatius, had voluntarily resigned his own — sponte se episcopatu abdicaverat (Sulpicius, II, 51), where Healy speaks of a forced resignation.^[62] The Gallic episcopate was left lastingly divided — the "Schism of Felix", around the bishop of Trier ordained with Ithacian support, durably set supporters and opponents of Ithacian communion against each other.^[63] As for Maximus, overthrown in 388, Theodosius annulled all of his acts: a general annulment (388–389), not a measure obtained for this case.^[64] And Martin, who to wrest their pardon had agreed to communicate briefly with the Ithacians at the ordination of Felix of Trier, bitterly repented of it and henceforth kept away from assemblies of bishops — even though, during the trial itself, Ithacius had publicly accused him of heresy (Sulpicius, II, 50).^[65]

The First Council of Toledo (400): Symphosius and Dictinius reconciled

The leader's death did not kill the party: on the contrary, the number and zeal of the heretics increased, and those who had honoured Priscillian as a saint began to venerate him as a martyr.^[66] The bodies, carried to Spain, were buried there with great pomp, and it came to be held the highest exercise of religion to swear by Priscillian — while Catholics and Priscillianists clashed in a fifteen-year quarrel, fuelled, says Sulpicius, by the discord of the bishops themselves.^[67]

"It came to be held the highest exercise of religion to swear by Priscillian." — Sulpicius Severus, Chronicle, II, 51, on the veneration of the executed (author's translation from the Latin)^[68]

In 400, a synod met at Toledo: many were reconciled, including two bishops, Symphosius and Dictinius; the latter was the author of a Priscillianist moral treatise, the Libra (the Balance).^[69] The invasions of the Vandals and the Suebi, by overturning the peninsula, paradoxically favoured the spread of the heresy amid the chaos.^[70]

Orosius calls on Augustine for help (414–415)

The threatening revival of the party prompted Orosius, a Spanish priest, to write to St Augustine in 414 asking for help against the heresy: his Commonitorium set out chiefly the doctrine of the soul consubstantial with God.^[71] Augustine replied in 415 with his treatise Against the Priscillianists and the Origenists, listed the sect among the heresies in his De haeresibus, and returned to the condemnation at the end of his life.^[72] St Jerome, who had catalogued Priscillian's works in his De viris illustribus (chapter 121), firmly condemned it too.^[73]

Turibius of Astorga and St Leo's letter (447)

Around 447, Turibius, bishop of Astorga, alarmed by the persistence of the evil in Galicia, sent the pope a memorandum of the errors.^[74] Pope St Leo the Great replied to him on 21 July 447 with his famous Letter 15: sixteen chapters refute the theses one by one — the Trinity, the soul, the body of Christ, the apocrypha — and it is the pope who insistently calls for a general council of all Spain.^[75] Its preface, however, does not conceal the sword: Leo recalls there that the rulers of the world abhorred this folly so much that they struck down its author and most of his disciples "by the sword of the public laws", and that this severity profuit diu — long served the gentleness of the Church, which, deferring to priestly judgment, refuses bloody vengeance.^[76] The blood of Trier was shed by the civil power; the Church refuses blood — that is the Catholic answer, with Martin, Ambrose and Theognistus.

Braga (561): seventeen anathemas and extinction

Despite so many efforts, the sect persisted in Spain in the 5th century — Turibius's memorandum and Leo's reply (447) attest to it.^[77] It took the First Council of Braga, in 561, to finish it: the synod legislated against Priscillianism article by article and promulgated its seventeen anathemas, from which we draw most of what is known of the system's late errors.^[78] After Braga, the heresy declines and dies out in the 6th century — one hundred and eighty-one years after Saragossa (380–561).^[79]

Schepss and the eleven treatises

All of Priscillian's writings were supposed to have been destroyed; all that was known of him was his Canons on the Epistles of Paul — Canones… a Peregrino episcopo emendati, "revised by Bishop Peregrinus" —, recognized as orthodox.^[80] But in 1885, Georg Schepss discovered in the library of the University of Würzburg a 5th–6th-century manuscript containing eleven treatises attributed to Priscillian — Liber apologeticus, letter to Damasus, treatise On Faith and the Apocrypha, hymns — published in the Vienna Corpus in 1889 (CSEL 18); attribution disputed since Morin (1913), with only the Canons undisputed.^[81] Four of these pieces, which recount the party's ordeals, are probably the work of a disciple rather than of the master himself.^[82]

What do the texts really say? The historians' debate

The discovery did not close the controversy — it shifted it: was Priscillian truly a heretic, or unjustly condemned for an asceticism that caused offense? Künstle (Antipriscilliana, 1905) concluded, after a complete examination of the case, that the innocence hypothesis is extremely unlikely — as did Healy; but the objection remains strong: Chadwick (Priscillian of Avila; cf. pp. 86-89 on the christology of the treatises), Burrus, Conti and Ferreiro (2023) stress the fabrication — as much political as doctrinal — of the heretic, Treatise I (CSEL 18, pp. 22-23) argues for its author's orthodoxy, and Jerome, in 393 (De viris illustribus, 121), lists Priscillian's works in a neutral tone.^[83] Before Künstle, Paret (1891) had sought to see in Priscillian a "reformer of the fourth century"; Babut (1909) had reopened the trial as a historian; Menéndez Pelayo had placed the affair within his History of the Spanish Heterodox; and the modern reference remains Henry Chadwick, Priscillian of Avila (Oxford, 1976), joined by Virginia Burrus (The Making of a Heretic, 1995).^[84] What remains firmly attested are the theses condemned by St Leo (447) and Braga (561): Priscillian defended the reading of the apocrypha, called for an asceticism of rupture with common discipline, and asked to be judged on the Scriptures in public debate — his Liber apologeticus (Liber ad Damasum, 2nd piece of the Schepss edition: CSEL 18, pp. 3-33; cf. Gerión 2024, p. 457) is first of all, in his own words paraphrased here, an appeal for adversarial proceedings: a judgment on the Scriptures, in public disputation, and not on rumors — a procedure the trial at Trier never granted him.^[85][86]

Where the idea comes from

Since the bodies of the executed were transported to Spain and honored — with no place specified (ad Hispanias, destination unknown) — and since Galicia kept the memory of the victims of Trier, Louis Duchesne put forward a bold hypothesis: the tomb discovered in the 9th century at Compostela and identified as that of the apostle Saint James would in reality be that of Priscillian.^[87] Chadwick himself takes the hypothesis seriously: the Galician community which, for more than two hundred years, cherished the memory of Priscillian's martyrdom around a shrine offers a possible explanation of the mysterious origins of Compostela (cf. A. Piay Augusto, 2016).^[88]

What the evidence really shows

The evidence is inconclusive: beneath the cathedral lies an ancient necropolis, Priscillian had been bishop of Avila, in Lusitania — not of Galicia —, and although Prosper calls him de Gallaecia, the burial place of the executed remains unknown.^[89] The hypothesis stands as a symptom: it speaks of the enduring fascination with the executed man of Trier. But the Catholic historian sticks to the documents: a bishop condemned by the Church, executed by the State, mourned by saints — and an apostle's tomb of which twelve centuries of pilgrims have never doubted.^[90]

Heresy and the sword: what the Church refused

The central lesson of the affair is not doctrinal but moral and juridical: for the first time, bishops were asking the State to kill heretics — and saints said no. Martin extracting the promise that blood would be spared, Ambrose breaking with the accusers, Theognistus and the bishops refusing Ithacius's communion: in 385–388, saints refused that blood be shed for the faith.^[91] The Church nonetheless acknowledged, through St Leo (447), that the sword of public laws had profuit diu — long served the ecclesiastical gentleness which itself refuses bloodshed; and John Paul II counted among the painful pages to be acknowledged the acquiescence given to methods of intolerance and violence in the service of truth (TMA 35).

True asceticism and false asceticism

The second lesson concerns the spiritual life: Priscillianism recalls that not every asceticism is holy merely because it is harsh. Fasting on Sundays, despising marriage, treating meat as unclean, fleeing the church for the wilderness — this is to place self-will above obedience, and contempt for the body above thanksgiving.^[92] The Church, for her part, honors the monks and virgins who fast with her, at the times she appoints, so as to love more — and she deems suspect any fervor that begins by breaking communion.^[93] That is the unfailing criterion, yesterday as today: saints fast to unite; sects fast to separate.^[94]

• The heresies of the early centuries
• Gnosticism
• Manichaeism
• Montanism
• Docetism
• Sabellianism
• Modalism
• Novatianism
• Donatism (311-411)
• Arianism
• Pelagianism