Sometime before 325, the now-Christian Roman emperor Constantine wrote Shapur a letter, in which he encouraged the young shah to embrace Christianity.9 Constantine pointed out the presence of many Christians in Persia and urged Shapur to treat them well: “Now, because your power is great, I commend these persons to your protection; because your piety is eminent, I commit them to your care. Cherish them with your wonted humanity and kindness; for by this proof of faith you will secure an immeasurable benefit both to yourself and us.”10 In the process of making these suggestions, Constantine inadvertently called the attention of Shapur’s advisers both to the presence of Christians in their midst and to the fact that Rome now favored followers of the new religion.

Abstract: Constantine’s conversion to Christianity in the early fourth century brought an end to state-sponsored persecution in the Roman empire. Around the same time, however, the relatively peaceful Persian empire turned violently upon the church in its lands. Though the accurate number of martyrs remains difficult to assess, the most conservative estimates place the death toll in the Great Persian Persecution (339–379) far higher — even ten times higher — than the death toll in the worst Roman persecution. In response to such widespread assaults, many Persian Christians fled if they could. Many others, either unable or unwilling to flee, took courage from stories of faithful sufferers and stood firm. Today, their testimonies still give fresh courage to those who suffer for Christ.

When Western Protestants think of the persecution of early Christians, we often imagine believers being thrown to the lions in the Roman Colosseum. According to the story as we learned it in Sunday school and elsewhere, Christians were ruthlessly persecuted for their faith for three centuries, until Constantine’s dramatic conversion around the year 312 brought about a sea change in the Roman empire’s attitude toward Christianity.

This Sunday school version of the story, while not wrong, is both misleading and incomplete. It is misleading because it gives the impression that persecution in the Roman empire was continuous, when in fact it was sporadic, varying from nonexistent to severe, depending on where and when one lived. This story is also incomplete because it does not even acknowledge by far the worst persecution of Christians in the ancient world, the Great Persian Persecution instigated by Shah Shapur II in 339.1 Many Western Christians are not aware that Christianity quickly took root in Persia (approximately modern-day Iran and Iraq) in ancient times.2 A look at the differing fortunes of Christians in the Roman and Persian empires, as well as the ways they responded to persecution, yields important lessons for believers today.

Two Great Persecutions Compared

Persecution of Christians in the Roman empire was generally local in character, confined to a region based on the personal antipathy of the governor toward the faith. But there were two major periods of widespread persecution, encompassing most regions of the empire at the same time. These were a persecution under emperors Decius and Valerian in the 250s, and the Great Persecution under Emperor Diocletian, which began in 303 and lasted a couple of years in the western part of the empire and a couple of decades in the eastern part. It was during this Great Persecution that Constantine became a Christian and gained control over the entire Roman empire.

By carefully counting the martyr lists in given regions at given times, modern scholars can gain a general picture of the severity of the persecution and then extrapolate to arrive at guesses of how many believers were killed in total. An estimate that has gained scholarly acceptance is perhaps 3,000–3,500 deaths in all, of which maybe 500 happened in the west and 2,500–3,000 in the eastern parts of the empire.3 When we consider that in the early fourth century, the population of the Roman empire was between 60 and 75 million people, of whom perhaps 10 percent (or about 6–7 million) were Christians, we can see that the total death toll was relatively small.

In contrast, the Great Persian Persecution is traditionally regarded as having lasted forty years, from 339 until Shapur’s death in 379. In actuality, it was frightfully intense for a couple of decades and then ebbed and flowed until the early fifth century, well beyond the life span of Shapur himself. Estimating deaths from this persecution is much harder than in the case of Diocletian’s, but one of the earliest reports we have is sobering.

The church historian Sozomen, writing about 440, declares, “I shall simply state that the number of men and women whose names have been ascertained, and who were martyred at this period, have been computed to be sixteen thousand; while the multitude outside of these is beyond enumeration.”4 This statement, even if exaggerated, points to a huge death toll. Modern estimates have varied from as many as the eye-popping figure of 190,0005 down to a more “modest” figure of 35,000.6 Even the conservative estimate is ten times the number of Christians martyred in the Great Roman Persecution, although the Persian empire’s population (perhaps 18–35 million) was less than half that of the Roman, with a much smaller Christian population as well. By any estimate, the loss of life in the Great Persian Persecution was immeasurably greater than the death toll of the Great Roman Persecution a few decades earlier.

This staggering death toll is all the more surprising when we consider that prior to the fourth century, there had been no significant persecution of Christians in the Persian empire at all. Indeed, early in the fourth century, just as the Roman empire shifted from persecuting Christians (in varying degrees in different places and times) to favoring our faith, the Persian empire changed from basically ignoring Christians to unleashing a savage persecution on them. How did such a shocking change come about? To answer this question, we will need a brief overview of early Christianity in the Persian empire.

Treatment of Christians in the Persian Empire

The early Christian period took place during the long reigns of two great Persian dynasties: the Parthians, who ruled from 247 BC until AD 224, and the Sassanids, who reigned from 224 until they were conquered by the Arabs in 651. The Parthian period was one of relative peace in Persia, and there was essentially no state action against Christians, for several possible reasons.

First, the Parthian regime was benign and decentralized, with a great deal of provincial autonomy. There was little persecution of anyone for any reason. Second, the Romans were the major menace to Persia, and it was common for Persian rulers to take the opposite position on any matter that was important to Rome. Since the Romans were suspicious of their Christian population, the Persians tended to welcome them or at least to leave them alone. Third was the fact that Zoroastrianism, the dominant religion in Persia, was much closer to the Christian faith than Roman polytheism. Zoroastrianism was a dualistic religion focused on the conflict between good and evil, and there were superficial resemblances with Christianity, such as a belief in a coming messiah and judgment after death. As a result, Christians did not stand out in Persian society nearly to the degree they did in pagan Roman society.

The political situation of Persia changed dramatically in the early third century. Significant invasions from Roman forces fueled a popular rebellion against the peaceful Parthian dynasty. A much more authoritarian regime, the Sassanids, gained popular favor on a platform of keeping Persia safe from the Romans, and in 224, they took control. The Sassanids were strict Zoroastrians and made that religion the national faith of Persia.

This time period also saw the rise of Manichaeism, another form of dualism that was directly in competition with Zoroastrianism. Its prophet, Mani, combined many features of Zoroastrianism with some specifically Christian language (he even called himself a disciple of Jesus Christ), and Manichaeism spread like wildfire in Persia and beyond. It was clearly a threat to the national religion, and in the 270s Mani was executed by crucifixion.

Read More