What the text says. Pliny reports that he has already handled cases: he asked the accused whether they were Christians, "repeated the question twice, and threatened them with punishment; if they persisted, I ordered them to be at once punished", sending Roman citizens to Rome. Then an anonymous list arrived. Those who denied the charge he tested: they "offered religious rites with wine and incense before your statue… and even reviled the name of Christ: whereas there is no forcing, it is said, those who are really Christians into any of these compliances". Some had left the faith "above twenty years ago". From the lapsed he learned what Christians actually did, the pre-dawn meeting, the prayer "to Christ, as to a divinity", the oath, the common meal, and after "putting two female slaves to the torture, who were said to officiate in their religious rites", found only "an absurd and extravagant superstition" and nothing criminal. He asks for a rule because "great numbers" of "all ranks and ages, and even of both sexes", in town and country, are involved, and the temples had been "almost deserted" (Letters 10.96, Melmoth/Bosanquet translation). Trajan answers: no general rule; "Do not go out of your way to look for them"; punish those accused and convicted, pardon any who deny it by "invoking our gods", and reject anonymous accusations as "a very dangerous precedent" (Letters 10.97).
What it shows, plainly. By c. AD 112, in a province on the Black Sea far from Judaea, Christianity had spread through cities and villages, across classes and both sexes, in numbers large enough to empty temples and worry a governor; some had been Christians since about AD 90; the worship centred on Christ, addressed "as to a divinity"; the community's ethic was an oath against fraud, theft, adultery and broken trust; and the Roman test of a Christian was whether the person would curse Christ and sacrifice to the emperor's image. The letter is not about Jesus at all, it never says who Christ was or when he lived, and it is written by a man who had already executed people for the name. Two connections to the New Testament are matters of plain text rather than argument: the First Epistle of Peter is addressed "to the elect who are sojourners of the Dispersion in Pontus, Galatia, Cappadocia, Asia, and Bithynia" (1 Peter 1:1, ASV), the double province Pliny governed, and it anticipates the very charge Pliny tried: "if a man suffer as a Christian, let him not be ashamed" (1 Peter 4:16, ASV). The word itself, "Christian", is the one the disciples were first given at Antioch (Acts 11:26, ASV: "the disciples were called Christians first in Antioch").
The contested points, each side stated. (1) The two women. Pliny's Latin calls them ministrae; Melmoth renders "female slaves… who were said to officiate in their religious rites", and many modern translators give "deaconesses", whether the word names a formal office or only a role is debated, and the translation chosen tends to decide it. (2) The date and the letter's authenticity. The governorship is placed c. AD 110-112 and the letters are accepted as genuine by essentially all scholars; a reader will meet the older numbering (97/98) in nineteenth-century editions, which is the same text. (3) What "as to a divinity" proves. The phrase (Latin quasi deo) shows that Christians in Bithynia treated Christ as divine within a lifetime of his death; it does not show that Pliny, or Trajan, thought anything about Christ himself, and the letter is evidence for the movement's practice, not for its claims.
Sources: Pliny, Letters 10.96 and 10.97; 1 Peter 1:1; 1 Peter 4:16; Acts 11:26.
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