Against the Christians

Against the Christians (Κατὰ Χριστιανῶν; Adversus Christianos) is a late 3rd-century book written by Roman-Phoenician Neoplatonic philosopher Porphyry of Tyre, challenging the writings of Christian philosophers and theologians. Due to widespread censorship by Roman imperial authorities, no known copies of this book exist. Only through references to it in Christian writings criticizing it can its contents be reconstructed.

Background
During his retirement in Sicily, Porphyry wrote Against the Christians (Κατὰ Χριστιανῶν; Adversus Christianos) which consisted of fifteen books. Some thirty Christian apologists, such as Methodius, Eusebius, Apollinaris, Augustine, Jerome, etc., responded to his challenge. In fact, everything known about Porphyry's arguments is found in these refutations, largely because Theodosius II ordered every copy burned in AD 435 and again in 448.

Augustine and the 5th-century ecclesiastical historian Socrates of Constantinople assert that Porphyry was once a Christian.

Contents
As quoted by Jerome, Porphyry mocked Paul and the early Christians while suggesting that the "magical arts" performed by Jesus of Nazareth and his followers were nothing special, done similarly by other figures of Greco-Roman history: "He did it all for money; [...] (They were) poor and country-dwelling men, seeing that they used to have nothing; certain wonders were worked with magical arts. Not that it is unusual however to do wonders; for the magicians in Egypt also did wonders against Moses, Apollonius also did them, Apuleius also did them, and any number have done wonders. [They did wonders by magical arts] so that they might receive riches from rich and impressionable women, whom they had led astray."

Prophecy of Daniel
Porphyry especially challenged the prophecy of Daniel, because Jews and Christians pointed to the historical fulfillment of its prophecies as a decisive argument. But these prophecies, he maintained, were written not by Daniel but by some Jew who in the time of Antiochus Epiphanes (d. 164 BC) gathered up the traditions of Daniel's life and wrote a history of recent past events but in the future tense, falsely dating them back to Daniel's time. According to Jerome:

"Porphyry ... alleged that "Daniel" did not foretell the future so much as he related the past, and lastly that whatever he spoke of up till the time of Antiochus contained authentic history, whereas anything he may have conjectured beyond that point was false, inasmuch as he would not have foreknown the future."