Diocletianic Persecution

The Diocletianic or Great Persecution was the last and most severe persecution of Christians in the Roman Empire. In 303, the Emperors Diocletian, Maximian, Galerius, and Constantius issued a series of edicts rescinding the legal rights of Christians and demanding that they comply with traditional Roman religious practices. Later edicts targeted the clergy and ordered all inhabitants to sacrifice to the Roman gods (a policy known as universal sacrifice). The persecution varied in intensity across the empire—weakest in Gaul and Britain, where only the first edict was applied, and strongest in the Eastern provinces. Persecutory laws were nullified by different emperors at different times, but Constantine and Licinius's Edict of Milan (313) has traditionally marked the end of the persecution.

Christians had always been subject to local discrimination in the empire, but early emperors were either too reluctant to issue general laws against them or, at least in the 3rd century (see Crisis of the Third Century), too caught up with more immediate issues to do so. It was not until the 250s, under the reigns of Decius and Valerian, that such laws were passed. Under this legislation, Christians were compelled to sacrifice to Roman gods or face imprisonment and execution. When Gallienus acceded in 260, he issued the first imperial edict regarding tolerance toward Christians, leading to nearly 40 years of peaceful coexistence. Diocletian's accession in 284 did not mark an immediate reversal of disregard to Christianity, but it did herald a gradual shift in official attitudes toward religious minorities. In the first 15 years of his rule, Diocletian purged the army of Christians, condemned Manicheans to death, and surrounded himself with public opponents of Christianity. Diocletian's preference for autocratic government, combined with his self-image as a restorer of past Roman glory, presaged the most pervasive persecution in Roman history. In the winter of 302, Galerius urged Diocletian to begin a general persecution of the Christians. Diocletian was wary, and asked the oracle of Apollo for guidance. The oracle's reply was read as an endorsement of Galerius's position, and a general persecution was called on February 24, 303.

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