Porphyry’s Attack on Christianity and How the Church Fathers Responded

Introduction

Scholarly examinations of the Catholic Church in the second and early third centuries typically focus on two principal threats: internal challenges from false teaching and external pressures arising from Roman legal persecution. Yet an additional and often underappreciated danger came from pagan and Jewish critics whose intellectual attacks significantly reinforced both heretical movements and imperial hostility.

This paper surveys the environment, character, and scope of pagan and Jewish polemics against Christianity during this period, with particular attention to the pagan philosopher Porphyry and the responses offered by major patristic authors—especially Eusebius, Pacatus, Jerome, and Augustine.

Foundational scholarship in this field includes Pierre de Labriolle’s La réaction païenne (1948), Robert Wilken’s The Christians as the Romans Saw Them (1984), and John Granger Cook’s The Interpretation of the New Testament in Greco-Roman Paganism (2002). Like most modern scholars, Cook relies heavily on Adolf von Harnack’s 1916 collection of fragments from Porphyry’s Contra Christianos.

The Difficulty of Procuring Pagan Source Texts

A central challenge in studying anti-Christian literature from this era is that none of the major pagan polemical works survives intact. What remains are fragments preserved in Christian refutations—such as Origen’s Contra Celsum (A.D. 248), Porphyry’s Philosophy Drawn from Oracles (quoted by Eusebius, Theodoret, Augustine, and Philoponus), and Contra Christianos, which was twice ordered burned by imperial decree but survives in citations by Eusebius (Praeparatio Evangelica), Jerome, and Augustine (Letter 102).

The survival of Christian texts—despite persecution—testifies both to divine providence and to the limited influence of pagan polemics, which failed to secure a readership committed to their preservation. Yet reliance on fragments introduces interpretive uncertainty: the full scope of the original argument is unknown, and the accuracy of quotations preserved by opponents cannot be verified.

Religious Traditionalism in Pagan Rome

The cultural ethos of the Pax Romana prized religious traditionalism as the foundation of social stability. Christianity, perceived as a novel sect of Jewish monotheists and “atheists,” appeared inherently destabilizing. Porphyry’s maxim that “ancient law is best law” reflects this sentiment, while Tertullian observed that pagans treated antiquity itself as a quasi-religious criterion of truth (MacMullen, Paganism in the Roman Empire, 3).

Because novelty was suspect, Christian apologists frequently emphasized continuity with Judaism, arguing that Christianity was older than Hellenistic philosophy. Yet, as MacMullen notes, converts were not persuaded by claims of antiquity but by the conviction that Christianity was true (MacMullen, 95). Despite rhetorical competition between pagans and Christians, the persuasive power of Christian truth—combined with the witness of martyrdom—proved decisive even before the Edict of Toleration (A.D. 260–303) and the Edict of Milan (A.D. 313).

Religious Platonism in the Roman World

To understand Porphyry’s intellectual milieu, one must consider the rise of Gnosticism and its attempt to answer fundamental existential questions through a syncretic blend of psychology, myth, and cosmology. Gnosticism developed a loose but influential system involving a Supreme Being, emanations (Aeons), a demiurge, and a mythic narrative of salvation.

Christianity’s proclamation of the Logos incarnate provided fertile material for Gnostic reinterpretation, prompting figures such as Basilides, Marcion, Ptolemy, and Valentinus to merge Christian revelation with Gnostic speculation—an effort decisively refuted by Irenaeus in Against Heresies.

Two centuries earlier, Plato’s Timaeus had introduced a cosmological dualism between the eternal and the temporal (Arendt, Love and Saint Augustine, 62). When Platonic cosmology encountered the Septuagint and Gnostic myth, philosophers began synthesizing these traditions. This intellectual trajectory culminated in Plotinus (A.D. 204–270), whose Enneads—edited by his disciple Porphyry—present a systematic metaphysics of the One, the Intelligence, and the Soul, from which all existence emanates (Plotinus, Enneads).

Plotinus himself did not engage Christianity directly, but Porphyry did so vigorously.

Porphyry: Life and Intellectual Formation

Porphyry, born Malchus in Tyre around A.D. 234, received the Greek name “Porphyry” (“purple”) from his teacher Longinus. Christian tradition, preserved by Eusebius, claims Porphyry was once a Christian who abandoned the faith after being assaulted by fellow believers—an account that Wolfram Kinzig considers plausible (Cook, 104).

Porphyry admired Jesus as a moral teacher in his early writings. However, he was deeply offended by Origen’s attempt to harmonize Greek philosophy with Jewish Scripture. In Church History, Eusebius quotes Porphyry’s criticism of Christians who allegorize Moses and treat the Jewish Scriptures as esoteric riddles (Eusebius, H.E. 6.19.4). Origen’s typological reading of Leviticus—especially his interpretation of ritual purity laws in light of the Virgin Birth—would have exemplified the kind of exegesis Porphyry found objectionable (Origen, Homilies on Leviticus).

Porphyry also struggled with melancholy and contemplated suicide, a sign of his dissatisfaction with the material world and perhaps a predisposition toward Neoplatonic dualism (Sipe, Struggling with Flesh, 7). At Plotinus’s urging, he traveled to Sicily in 268, where he recovered and composed Contra Christianos, the most formidable pagan critique of Christianity in antiquity.

He later returned to Rome, lectured on philosophy, married a woman named Marcella (possibly Jewish), and died sometime before A.D. 305 (Cook, 106).

De Philosophia ex Oraculis Haurienda

Porphyry’s Philosophy Derived from Oracles, preserved only in fragments (primarily through Eusebius), represents his first sustained attack on Christianity. Using pagan deities as mouthpieces, Porphyry advances several claims consistent with Neoplatonism:

• Demons play a necessary mediating role in the material world.
• Christ possesses an immortal soul like heroic figures such as Dionysus or Hercules and deserves admiration but not worship.
• Christians err by worshipping Jesus’ body and thereby fall into impurity and ignorance.
• Hecate declares that Christ’s soul, though virtuous, has misled other souls and is therefore hated by the gods.
• Christians, lacking philosophical contemplation, mistake demons for gods and thus fail to worship the true divine.

Augustine, in City of God, dismisses these oracles as either the inventions of a clever anti-Christian polemicist or the deceptions of demons. He highlights contradictions within Porphyry’s own citations—for example, Apollo condemns Christ as unrighteous, while Hecate praises Him as pious—arguing that the purpose of such inconsistency is simply to prevent conversions to Christianity.

Contra Christianos

Porphyry’s Contra Christianos, a thirteen-book treatise, constituted a systematic assault on Christian Scripture, doctrine, worship, and moral teaching. Its influence was so significant that it was condemned and ordered destroyed by Constantine at Nicaea, by Theodosius II and Valentinian III in 444, by the Council of Chalcedon, and again by Justinian in 536 (Cook, 126). Severian of Gabala claimed the work led many Christians astray (Cook, 126).

Porphyry’s principal arguments include:

• Misinterpretation of the Jewish Scriptures: He accuses Christians—especially Origen—of allegorizing Moses and corrupting the meaning of the LXX, even though he himself regarded the Jewish Scriptures as mythological.
• Inconsistencies in Scripture: He highlights alleged contradictions in Genesis, the differing Gospel beginnings, the infancy narratives, and the calling of the disciples. Jerome responds to these objections by addressing textual issues such as Matthew 1:22–23, Mark’s conflation of Malachi 3:1 and Isaiah 40:3, and the reference to Abiathar in Mark 2:25–26 (Cook, 135).
• Genealogical discrepancies: Porphyry objects to Matthew’s genealogy, particularly the transition between 1:11 and 1:12. Jerome and Pacatus respond by clarifying the Jehoiakim/Jehoiachin issue (Cook, 136).
• Miracles and Christology: He rejects the walking-on-water narratives, the Johannine Logos, eternal punishment, and the exclusivity of Christ as the Way of salvation. Augustine counters Porphyry’s use of Lazarus as an analogy in Letter 102.
• Acts of the Apostles: Porphyry criticizes Peter’s judgment of Ananias and Sapphira, apostolic use of Jewish Scripture, and the evidentiary value of miracles—echoing earlier objections by Celsus.
• Pauline theology: He objects to Paul’s rebuke of the apostles in Galatians and to the harshness of Galatians 5:12.
• Christian worship: Porphyry attacks Christian liturgical practices—sacrifice, incense, ritual symbolism—and the influence of women in the Church. Augustine (Letter 102) and Jerome respond by explaining the theological meaning of Christian worship and clarifying the role of women.

Conclusion

Porphyry’s critiques emerged at a moment when the Church was still forming its doctrinal identity and emerging from persecution. His arguments were sophisticated, well-timed, and—given the Church’s limited theological infrastructure—potentially destabilizing. The repeated imperial orders to destroy Contra Christianos reflect the perceived danger of his work.

Yet the fragments preserved by Eusebius, Pacatus, Jerome, and Augustine reveal something remarkable: even a pagan philosopher in the late second and early third centuries understood Christian belief with surprising clarity. His objections presuppose a stable Christian canon, consistent doctrinal claims, and recognizable liturgical practices—evidence of the Church’s early unity long before Nicaea.

Porphyry also demonstrates how seriously pagan intellectuals regarded Christianity. He did not rely on coercion but on philosophical argumentation, attempting to persuade through the same rhetorical means Christians employed. What he lacked, however, was the faith to recognize that Neoplatonism, for all its elegance, could not answer the deepest questions of human existence.

Although Neoplatonism has faded, many of Porphyry’s objections remain alive in contemporary secular thought. His work thus continues to illuminate both the resilience of early Christian belief and the enduring patterns of anti-Christian critique.