Letter 133: Ctesiphon had written to Jerome for his opinion on two points in the teaching of Pelagius, (1) his quietism and (2) his denial of original sin. Jerome now refutes these two doctrines and points out that Pelagius has drawn them partly from the philosophers and partly from the heretics. He censures Rufinus, who had died 5 years before, for attribu...

JeromeCtesiphon|c. 414 AD|jerome
arianismbarbarian invasiondonatismeducation booksgrief deathhumorillnessimperial politicsmonasticismpelagianismproperty economicsslavery captivitywomen
Barbarian peoples/invasions; Theological controversy; Imperial politics

Jerome to Ctesiphon — greetings.

You were right to write, and you were right not to call it rash; it was prompted by zeal and friendship, which are good reasons for writing to anyone. The new controversy you describe has replaced the old one, as controversies tend to do in the Church — we have barely finished with Origenism, and now we have Pelagianism to deal with. Different disease, same underlying infection: the assumption that human nature is more capable of good than Christian teaching says it is.

Let me be plain about what Pelagius is actually claiming. He teaches that human beings have the natural ability, through their own free will and effort, to live without sin. Grace, in his system, is helpful — even very helpful — but not strictly necessary. A man could, in principle, achieve moral perfection without it. The law of Moses was, for Pelagius, the primary instrument of human improvement: it shows us what we should do, and, shown what we should do, we can do it.

This is not Christianity. It is Stoicism wearing a baptismal robe.

The Stoics taught that the passions — anger, fear, desire, grief — could be eradicated by philosophical discipline. Pythagoras and Zeno the Stoic both argued, in different ways, that virtue could be achieved by meditation and practice without any need for divine assistance. Pelagius has taken this ancient philosophical program and relabeled it as Christian ethics. The language is new; the substance is old.

What does Scripture actually say? "Through one man sin entered the world, and death through sin, and so death spread to all men, because all sinned" (Romans 5:12). This is not a metaphor. This is Paul's description of the actual condition of every human being born since Adam. We do not start neutral and become good or bad by our choices; we start damaged, and we require healing that we cannot administer to ourselves.

"Not by works of righteousness which we have done, but according to His mercy He saved us" (Titus 3:5). If salvation came through our own efforts, Christ died for nothing.

I understand the appeal of Pelagius's position. It is flattering. It tells people that they are fundamentally capable and that with sufficient effort they can be what they know they ought to be. The alternative — acknowledging that we are not capable, that we need help we cannot generate ourselves, that we depend entirely on a grace we cannot earn — is humiliating. But humiliation, in the Christian dispensation, turns out to be the beginning of wisdom, not its abandonment.

Write again. I intend to address this more fully in a treatise — a dialogue against the Pelagians — which I am already outlining. Consider this letter a first salvo.

Modern English rendering for readability. See the 19th-century translation or original Latin/Greek for scholarly use.

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