What Was Diocletian’s Great Persecution? (7 of 8)

The worst persecution the early church faced came after its longest stretch of peace, which is part of why it landed as it did.

It also ended in a way nobody would have scripted: with one of its architects, dying, issuing the edict that stopped it and asking Christians to pray for him.

What Was the Long Peace?

Roughly forty years of effective toleration, from the 260s to 303.

After Valerian’s capture by the Persians the pressure came off, and it stayed off for two generations. Churches were built in the open. Christians served in the civil administration and in the army. The institutional structures that would define the imperial church were quietly taking shape while the empire was not paying much attention.

The legal basis was real rather than merely informal. Under Gallienus in 260, Christianity became a legal religion for the first time, with freedom from interference and the right to own property. Diocletian left that framework in place for the first nineteen years of his reign.

How far the church grew in that window is harder to state, and I am not going to put a number on it. What the sources do show is penetration rather than volume. Christians were recognised as such among the officers of Diocletian’s own household, his wife and daughter were suspected of sympathy, and in 299 he began purging the army and court. A centurion named Marcellus was executed in Mauretania around 298 for refusing to take part in official cults.

Removing people requires that they be there. The purge is the evidence.

What matters for the story is the psychology. A generation had grown up without persecution. That is what makes 303 land as a betrayal rather than as the ordinary weather.

When Did the Great Persecution Begin?

23 February 303, with the first edict.

The measures escalated in stages. Scriptures were to be surrendered. Church buildings were to be demolished. Clergy were arrested. Eventually the requirement became universal sacrifice, on the Decian model.

The demand for the scriptures is the detail that distinguishes this persecution from the others. The empire had worked out that the books mattered, and it went after them specifically. That is an indirect confirmation of something significant: by 303 everyone, including the persecutors, knew which books Christians would rather die than surrender. A canon definite enough to confiscate is a canon in fact, whatever lists did or did not exist.

How Did the Great Persecution End?

With the Edict of Serdica on 30 April 311, issued by Galerius.

Galerius had been one of the chief drivers of the policy. Dying, he issued the edict that ended it, acknowledging that the effort to bring Christians back to traditional practice had not worked, restoring their right to assemble, and asking them to pray to their god for him and for the state.

Note the shape of that ending. Not a victory, not a conversion, not a triumph. An exhausted administration conceding that a policy had failed.

The persecution also did not stop everywhere at once. It ended in stages: Galerius in 311, then Milan in 313, then the eastern situation resolving as Licinius displaced Maximinus. Anyone who gives a single clean date for the end of persecution is compressing something messy.

Who Were the Traditores?

Those who handed over the scriptures when the edict demanded them.

The word means one who hands over, and it is the root of traitor. That etymology tells you how the surrender was regarded by those who refused.

The category created exactly the problem the lapsi had created fifty years earlier. When the pressure lifted, what do you do with the people who complied? And the sharpest form of the question was about clergy: if a bishop had handed over the books, were the ordinations he performed afterward valid?

What Was the Donatist Schism?

The North African split over bishops consecrated by men accused of being traditores.

The rigorist position held that a compromised minister could not validly administer anything, so ordinations traced through a traditor were void and the churches under them were not churches. The opposing view held that the validity of a sacrament does not rest on the moral state of the minister.

The schism outlived Constantine by a century. It was still a live and violent problem in Augustine’s time, and it drove much of his thinking about the church.

And it began immediately. Constantine had been emperor for months when he found himself being asked to adjudicate a church dispute in North Africa. The pattern of imperial entanglement in church affairs starts in year one, before any of the theology about it existed.

Why Do the Two Persecutions Rhyme?

Because both produced the same fracture, and the fracture was never about the dead.

Decius, 250. Pressure, then the broken, then the fight over restoration, then schism. The lapsi, then Novatian.

Diocletian, 303. Pressure, then the broken, then the fight over restoration, then schism. The traditores, then the Donatists.

Same sequence, fifty years apart, different names. In both cases the martyrs were honoured without controversy and the survivors nearly tore the church apart.

That is the durable lesson of the persecution era and it is not the one usually drawn. The deepest wound was never the killing. It was the question of what to do with the people who did not hold, and underneath that, the question of who has the authority to decide.

Part of a series on the Ante-Nicene age, following the Ante-Nicene timeline.

Footnotes2

1. That the empire targeted the books specifically is evidence of a kind rarely used in canon discussions. Confiscation requires knowing what to confiscate. The persecutors had a working answer to the question of which writings were the Christian scriptures, which means the churches had one too.
2. Galerius asking for Christian prayers in the edict that ended his own persecution is the sort of detail that would look invented in fiction. It is in the text, and it reads less like conversion than like a dying man covering every possibility.

Sources

Lactantius, On the Deaths of the Persecutors. Contemporary account of the persecution and the text of Galerius's edict of toleration. Free in full at the Christian Classics Ethereal Library.

Eusebius of Caesarea, Ecclesiastical History, books 8 and 9. The persecution narrative, including the order to destroy the scriptures. Same access. Eusebius lived through these events, which makes him a witness and also an interested party.

Where the sourcing stops: the legal basis and scale of growth during the Long Peace are deliberately not quantified here pending verification. The parallel between the two persecutions is drawn on the source timeline and is the framing I am carrying rather than a claim from a named study.