Roman Empire and Christianity, 3
The Moral and Spiritual Bankruptcy of the Ancient World
By the time Christianity emerged, the Roman Empire was experiencing a profound spiritual crisis. The ancient national religions had lost their hold on both intellectuals and ordinary people. Philosophers openly ridiculed the myths about the gods, while the masses went through rituals that brought no genuine comfort or moral transformation. Worship had become pure formalism — an empty performance disconnected from the heart.
The mystery religions attempted to fill the void, offering initiates secret knowledge and promises of spiritual experiences. But these religions lacked a unified moral vision and could not provide the ethical foundation that society desperately needed. As Paul described it in Romans 1:21-25, humanity had exchanged the truth about God for a lie and worshipped created things rather than the Creator. The result was a cascade of moral degradation that even Roman moralists like Seneca and Tacitus lamented.
Into this vacuum came a deep, unsatisfied longing for revelation — a desire for genuine knowledge of God that neither philosophy nor traditional religion could provide. As Paul told the Athenians, God had arranged the times and boundaries of nations "that they should seek God, and perhaps feel their way toward him and find him" (Acts 17:27). The ancient world had reached the end of its own spiritual resources.
The Positive Power of the Gospel
The triumph of Christianity was not merely the result of paganism's failure. The gospel offered something genuinely new and compelling. First, Christianity proclaimed a God who was both transcendent and personal — the Creator of heaven and earth who had entered human history in the person of Jesus Christ (John 1:14; Colossians 1:15-20). No philosophical system and no pagan religion offered anything comparable.
Second, Christianity provided a coherent moral vision grounded in the character of God Himself. The ethical teaching of Jesus — love your enemies, care for the poor, practice sexual purity, speak truthfully — offered a way of life that was both demanding and attractive. Observers noted the remarkable moral transformation in the lives of converts. As Paul wrote to the Corinthians, cataloguing their former sins: "And such were some of you. But you were washed, you were sanctified, you were justified in the name of the Lord Jesus Christ" (1 Corinthians 6:11).
Third, Christianity offered genuine hope beyond death. The Epicureans taught that death was the end of all existence; the Stoics believed the soul was eventually absorbed back into the universal fire. Christianity proclaimed the bodily resurrection of Jesus as the guarantee of resurrection for all who believe (1 Corinthians 15:20-22). This hope sustained believers through persecution and gave meaning to suffering.
The Witness of Martyrdom and Community
The courage of Christian martyrs was one of the most powerful evangelistic forces in the early centuries. Tertullian's famous observation that "the blood of the martyrs is the seed of the church" captured a genuine historical reality. When pagans saw ordinary men and women — including slaves and young girls — face torture and death with calm confidence and even joy, they were confronted with a faith qualitatively different from anything they had known.
Equally powerful was the witness of the Christian community itself. Believers cared for widows, orphans, and the sick — including pagans during epidemics. They practiced racial and social equality in a rigidly stratified society: "There is neither Jew nor Greek, there is neither slave nor free, there is no male and female, for you are all one in Christ Jesus" (Galatians 3:28). Emperor Julian, who tried to restore paganism in the fourth century, grudgingly admitted that Christians cared not only for their own poor but for pagan poor as well.
The organizational structure of the church also proved essential. Unlike the loosely organized mystery cults, Christianity developed a robust network of bishops, deacons, and local congregations that could coordinate charitable work, maintain doctrinal standards, and provide pastoral care. This institutional resilience allowed the faith to survive and grow even under persecution.
From Persecution to Toleration
The Roman Empire's relationship with Christianity moved through several phases. The earliest persecutions were sporadic and local — Nero's scapegoating after the fire of Rome in AD 64 (when both Peter and Paul are traditionally believed to have been martyred) and Domitian's actions in the 90s. More systematic persecutions came under Decius (250-251), Valerian (257-260), and most severely under Diocletian and Galerius (303-311).
Yet persecution ultimately failed. As Gamaliel had predicted regarding the apostles: "If this plan or this undertaking is of man, it will fail; but if it is of God, you will not be able to overthrow them" (Acts 5:38-39). The Great Persecution under Diocletian was the most intense and widespread, yet within a decade, the empire had reversed course entirely.
In 313, the Edict of Milan, issued jointly by Constantine and Licinius, granted religious toleration throughout the empire. Constantine's personal conversion — whatever its precise nature and sincerity — marked a turning point. He favored Christianity with imperial patronage, returned confiscated property, built churches (including the original St. Peter's Basilica and the Church of the Holy Sepulchre), and convened the Council of Nicaea in 325 to address theological disputes.
The Conversion of the Empire
The transformation from a persecuted minority to the official religion of the empire was completed by the end of the fourth century. Emperor Theodosius I made Christianity the state religion in 380 and prohibited public pagan worship. By then, the majority of the empire's population had already embraced the faith.
This triumph, however, brought its own challenges. When Christianity became the religion of power, the sharp distinction between the church and the world began to blur. Mass conversions sometimes reflected political convenience rather than genuine faith. The marriage of church and state that began under Constantine would produce both great benefits — the preservation of learning, the evangelization of barbarian peoples, the establishment of hospitals and universities — and significant problems that would trouble the church for centuries.
The New Testament itself anticipates both the spread of the gospel to the ends of the earth (Matthew 28:19-20; Acts 1:8) and the danger of compromise with worldly power (Revelation 2-3). The conversion of the Roman Empire fulfilled the first while illustrating the second, leaving the church with the ongoing task of maintaining its prophetic witness within a society that claims to be Christian.
Biblical Context
The relationship between the church and earthly powers is addressed throughout the New Testament. Jesus acknowledged Caesar's legitimate authority while distinguishing it from God's (Matthew 22:21). Paul taught respect for governing authorities as God's servants (Romans 13:1-7) while recognizing that the ultimate allegiance belongs to Christ (Philippians 2:9-11). The book of Acts records the spread of the gospel throughout the Roman world, from Jerusalem to Rome itself (Acts 1:8; 28:16-31). Revelation addresses the tension between faithful witness and imperial power, warning against compromise with worldly systems (Revelation 13; 17-18) while promising the ultimate triumph of Christ's kingdom (Revelation 11:15).
Theological Significance
The conversion of the Roman Empire raises fundamental questions about the relationship between the gospel and political power. Scripture teaches that God is sovereign over all nations and uses them for His purposes (Daniel 2:21; Acts 17:26). The triumph of Christianity over paganism demonstrates the power of the gospel to transform not just individuals but entire civilizations. Yet the New Testament consistently warns that the kingdom of God cannot be equated with any earthly empire. The church's true power is not political but spiritual — the proclamation of the crucified and risen Christ, the witness of transformed lives, and the hope of the coming kingdom.
Historical Background
The conversion of the Roman Empire unfolded over approximately three centuries. Key events include Nero's persecution (AD 64), Pliny's correspondence with Trajan about prosecuting Christians (AD 112), the systematic persecutions under Decius and Diocletian, the Edict of Milan (313), Constantine's patronage and the Council of Nicaea (325), Julian's failed attempt to restore paganism (361-363), and Theodosius I's establishment of Christianity as the state religion (380). Archaeological evidence of this transformation includes the conversion of pagan temples into churches, the construction of great basilicas, and the gradual disappearance of pagan imagery from Roman coinage and public monuments.