Christianity in the 4th century in the context of "Persecution of Christians"

Patriarchate (/ˈpeɪtriɑːrkɪt, -keɪt/, UK also /ˈpætri-/; Ancient Greek: πατριαρχεῖον, patriarcheîon) is an ecclesiological term in Christianity, referring to the office and jurisdiction of a patriarch.

According to Christian tradition, three patriarchates—Rome, Antioch, and Alexandria—were established by the apostles as apostolic sees in the 1st century. These were officially recognized by the First Council of Nicaea. The Patriarchate of Constantinople was added in the 4th century, and the Patriarchate of Jerusalem followed in the 5th century. These five sees were later recognized collectively as the pentarchy by the Council of Chalcedon in 451.

The Church of the Holy Sepulchre, also known as the Church of the Resurrection, is a fourth-century church in the Christian Quarter of the Old City of Jerusalem. The church is simultaneously the seat of the Armenian Patriarchate of Jerusalem, Greek Orthodox Patriarchate of Jerusalem, and the Catholic Latin Patriarchate of Jerusalem. It is the holiest site in Christianity and it has been an important pilgrimage site for Christians since the fourth century.

According to traditions dating to the fourth century, the church contains both the site where Jesus was crucified at Calvary, or Golgotha, and the location of Jesus's empty tomb, where he was buried and, resurrected. Both locations are considered immensely holy sites by most Christians. The church and rotunda was built under Constantine the Great in the 4th century and destroyed by al-Hakim in 1009. Al-Hakim's son allowed Emperor Constantine IX Monomachos to reconstruct the church, which was completed in 1048. After it was captured by the crusaders in 1099, it continued to undergo modifications, resulting in a significant departure from the original structure. Several renovations and restorations were made under the Ottomans. The tomb itself is enclosed by a 19th-century shrine called the Aedicule.

In the 5th century in Christianity, there were many developments which led to further fracturing of the State church of the Roman Empire. Emperor Theodosius II called two synods in Ephesus, one in 431 and one in 449, that addressed the teachings of Patriarch of Constantinople Nestorius and similar teachings. Nestorius had taught that Christ's divine and human nature were distinct persons, and hence Mary was the mother of Christ but not the mother of God. The Council rejected Nestorius' view causing many churches, centered on the School of Edessa, to a Nestorian break with the imperial church. Persecuted within the Roman Empire, many Nestorians fled to Persia and joined the Sassanid Church (the future Church of the East) thereby making it a center of Nestorianism. By the end of the 5th century, the global Christian population was estimated at 10-11 million. In 451 the Council of Chalcedon was held to clarify the issue further. The council ultimately stated that Christ's divine and human nature were separate but both part of a single entity, a viewpoint rejected by many churches who called themselves miaphysites. The resulting schism created a communion of churches, including the Armenian, Syrian, and Egyptian churches, that is today known as Oriental Orthodoxy. In spite of these schisms, however, the imperial church still came to represent the majority of Christians within the Roman Empire.

At the end of the 4th century the Roman Empire had effectively split into two states although its economy and the Church were still strongly tied. The two halves of the empire had always had cultural differences, in particular exemplified by the widespread use of the Greek language in the Eastern Empire and the more limited use of Greek in the West (Greek was used in the West but Latin was displacing it as the spoken vernacular. By the 5th century scholars in the West had begun to abandon Greek in favor of the use of Latin. The Church in Rome, in particular, began to encourage the use of Latin in the western provinces and published Jerome's Vulgate, the first authorized translation of the Bible in Latin.

Epiphanius of Salamis (Ancient Greek: Ἐπιφάνιος; c. 310–320 – 403) was the bishop of Salamis, Cyprus, at the end of the 4th century. He is considered a saint and a Church Father by the Eastern Orthodox, Catholic Churches, and some Presbyterians. He gained a reputation as a strong defender of orthodoxy. He is best known for composing the Panarion, a compendium of eighty heresies, which included also pagan religions and philosophical systems. There has been much controversy over how many of the quotations attributed to him by the Byzantine Iconoclasts were actually by him. Regardless of this, he was clearly strongly against some contemporary uses of images in the church.

The Ecclesiastical History (Ancient Greek: Ἐκκλησιαστικὴ Ἱστορία, Ekklēsiastikḕ Historía; Latin: Historia Ecclesiastica), also known as The History of the Church and The Church History, is a 4th-century chronological account of the development of Early Christianity from the 1st century to the 4th century, composed by Eusebius, the bishop of Caesarea. It was written in Koine Greek and survives also in Latin, Syriac, and Armenian manuscripts.

The persecution of Christians in the New Testament is an important part of the Early Christian narrative which depicts the early church as being persecuted for their heterodox beliefs by a Jewish establishment in the Roman province of Judea. The New Testament, especially the Gospel of John, has traditionally been interpreted as relating Christian accounts of the Pharisee rejection of Jesus and accusations of the Pharisee responsibility for his crucifixion. The Acts of the Apostles depicts instances of early Christian persecution by the Sanhedrin, the Jewish religious court.

Walter Laqueur argues that hostility between Christians and Jews grew over the generations. By the 4th century, John Chrysostom was arguing that the Pharisees alone, not the Romans, were responsible for the murder of Christ. However, according to Laqueur: "Absolving Pilate from guilt may have been connected with the missionary activities of early Christianity in Rome and the desire not to antagonize those they want to convert."