Marcus, a native of Memphis in Egypt, came to Spain and taught Gnostic theories. Two of his followers, a Spanish woman named Agape and the
rhetorician Helpidius, converted Priscillian, who was a layman "of noble birth, of great riches, bold, restless, eloquent, learned through much reading, very ready at debate and discussion". Through his oratorical gifts and reputation for extreme
asceticism, Priscillian attracted a large following, including Helpidus and two bishops, Instantius and Salvianus. They established a new sect as an oath-bound society, attracting the attention of the bishop
Hyginus of Cordoba. Hyginus made his fears known to Hydatius, Bishop of
Emerita, and Ithacius of
Ossonoba. The bishops of
Hispania and
Aquitaine held a synod at
Zaragoza in 380. Though summoned, the Priscillianists refused to appear. The synod pronounced sentence of excommunication against the four leaders, Instantius, Salvianus, Helpidius and Priscillian. Ithacius was chosen to enforce the synod's decrees, but he failed to bring the heretics to terms. In defiance Priscillian was ordained to the priesthood and appointed
Bishop of Avila. Ithacius then appealed to the imperial authorities. The emperor
Gratian issued a decree which deprived the Priscillianists of their churches and sentenced them to exile. Instantius, Salvianus and Priscillian proceeded to Rome to gain the aid of
Pope Damasus I (also from Hispania) in having this sentence revoked. On their journey they were joined by many supporters from Gaul, including a large number of women mentioned in contemporary sources. Reports of improper behavior by their followers and benefactors – possibly fabricated – were circulated against them. Denied an audience by
Pope Damasus, they went to Milan to make a similar request of
St. Ambrose, but with the same result. They then resorted to intrigue and bribery at the court with such success that they were not only freed from the sentence of exile, but permitted to regain possession of their churches in Hispania, where, under the patronage of the imperial officials, they enjoyed such power as to compel Ithacius to leave the country. He, in turn, appealed to
Gratian, but before anything had been accomplished the emperor was murdered in Lyon, and
Magnus Maximus had taken his place. Maximus treated the matter not as one of ecclesiastical rivalry, but as one of morality and society. As he wished to curry favour with the orthodox bishops and to replenish his treasury through confiscations, the Emperor gave orders for a synod, which was held in
Bordeaux in 384. Instantius was first tried and condemned to deposition. Priscillian appealed to the emperor at
Trier. Ithacius acted as his accuser and was so vehement in his denunciations that
St. Martin of Tours, who was then in Trier, intervened. After expressing his disapproval of bringing an ecclesiastical case before a civil tribunal, he obtained from the emperor a promise not to carry his condemnation to the extent of shedding blood. After St. Martin had left the city, the emperor appointed the prefect Evodius as judge. He found Priscillian and some others guilty of the crime of magic. This decision was reported to the emperor, who ordered the execution of Priscillian and several of his followers. The property of others was confiscated and they were banished. The conduct of Ithacius was severely criticized. St. Martin, hearing what had taken place, returned to Trier and compelled the emperor to rescind an order to
military tribunes, who were on their way to Hispania to extirpate the heresy. The Church did not invoke civil authority to punish heretics. The pope censured not only the actions of Ithacius but also that of the emperor. St. Ambrose was equally stern in his denunciation of the case. Some of the Gallican bishops, who were in Trier under the leadership of Theognistus, broke off communion with Ithacius. He was subsequently deposed from his see by a synod of Hispanic bishops, and his friend and abettor Hydatius was compelled to resign. After the executions of Priscillian and his followers by the emperor, however, the numbers and zeal of the heretics increased. In 400 another synod was held in
Toledo to deal with this problem; many, including bishops Symphonius and Dictinnius, were reconciled to the Church through this synod. Dictinnius was the author of a book
Libra (Scales), a moral treatise from the Priscillianist viewpoint. The upheaval in the Hispania due to the invasion of the
Vandals, the
Alans and the
Suevi aided the spread of Priscillianism.
Paulus Orosius, a
Gallaecian priest from northwest Hispania, wrote to
St. Augustine (415 CE) to enlist his aid in combating the heresy.
Pope Leo I at a later date took active steps for its repression and at his urgent insistence, councils were held in 446 and 447 at
Astorga,
Toledo and
Braga. In spite of these efforts, the sect continued to spread during the fifth century. In the following century it began to decline. After the
First Council of Braga (561), which specifically targeted its doctrines, it soon died out. ==Teaching==