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This is a timeline showing the dates when countries or polities made Christianity the official state religion, generally accompanying the baptism of the governing monarch.
In ecclesiology, the Christian Church is what different Christian denominations conceive of as being the true body of Christians or the original institution established by Jesus. "Christian Church" has also been used in academia as a synonym for Christianity, despite the fact that it is composed of multiple churches or denominations, many of which hold a doctrinal claim of being the "one true church", to the exclusion of the others.
The Apostolic Autocephalous Orthodox Church of Georgia, commonly known as the Georgian Orthodox Church or the Orthodox Church of Georgia, is an autocephalous Eastern Orthodox church in full communion with the other churches of Eastern Orthodoxy. It is Georgia's dominant religious institution, and a majority of Georgian people are members. The Orthodox Church of Georgia is one of the oldest churches in the world. It asserts apostolic foundation, and that its historical roots can be traced to the early and late Christianization of Iberia and Colchis by Andrew the Apostle in the 1st century AD and by Saint Nino in the 4th century AD, respectively. As in similar autocephalous Eastern Orthodox Christian churches, the church's highest governing body is the holy synod of bishops. The church is headed by the Patriarch of All Georgia, Ilia II, who was elected in 1977.
The Germanic peoples underwent gradual Christianization in the course of late antiquity and the Early Middle Ages. By AD 700, England and Francia were officially Christian, and by 1100 Germanic paganism had also ceased to have political influence in Scandinavia.
A catholicos is the head of certain churches in some Eastern Christian traditions. The title implies autocephaly and, in some cases, it is the title of the head of an autonomous church. The word comes from ancient Greek καθολικός, derived from καθ' ὅλου from κατά and ὅλος, meaning "concerning the whole, universal, general"; it originally designated a financial or civil office in the Roman Empire.
Saint NinoEqual to the Apostles and the Enlightener of Georgia was a woman who preached Christianity in the territory of Caucasian Iberia, of what is now part of Georgia. It resulted in the Christianization of the royal house of Iberia, with the consequent Christianization of Iberia.
Gothic Christianity refers to the Christian religion of the Goths and sometimes the Gepids, Vandals, and Burgundians, who may have used the translation of the Bible into the Gothic language and shared common doctrines and practices.
As of 2011, most Armenians in Armenia are Christians (97%) and are members of the Armenian Apostolic Church, which is one of the oldest Christian churches. It was founded in the 1st century AD, and in 301 AD became the first branch of Christianity to become a state religion.
Christianity is the largest religion in England, with the Church of England being the nation's established state church, whose supreme governor is the monarch. Other Christian traditions in England include Roman Catholicism, Methodism and the Baptists. After Christianity, the religions with the most adherents are Islam, Hinduism, Sikhism, Judaism, Buddhism, modern paganism, and the Bahá'í Faith. There are also organisations promoting irreligion, including humanism and atheism. According to the 2021 census, Shamanism is the fastest growing religion in England.
Christianity is the second largest religion in Egypt. The history of Egyptian Christianity dates to the Roman era as Alexandria was an early center of Christianity.
Christianity is a minority religion in Libya. It has been present in Tripolitania and Cyrenaica since Roman times.
The Chosroid dynasty, also known as the Iberian Mihranids, were a dynasty of the kings and later the presiding princes of the early Georgian state of Iberia from the 4th to the 9th centuries. The family, of Iranian Mihranid origin, accepted Christianity as their official religion c. 337, and maneuvered between the Byzantine Empire and Sassanid Iran to retain a degree of independence. After the abolition of the Iberian kingship by the Sassanids c. 580, the dynasty survived in its two closely related, but sometimes competing princely branches—the elder Chosroid and the younger Guaramid—down to the early ninth century when they were succeeded by the Georgian Bagratids on the throne of Iberia.
In 2020, 85.84% of the population adhered to Christianity, 11% were Muslim, 0.1% were Jewish, 0.04% were Baha'i and 3% had no religious beliefs. Other religious groups include Jehovah's Witnesses and Yazidis. Orthodox churches serving other non-Georgian ethnic groups, such as Russians and Greeks, are subordinate to the Georgian Orthodox Church.
Christianity began as a Second Temple Judaic sect in the 1st century in the Roman province of Judea, from where it spread throughout and beyond the Roman Empire.
Christianity in the 4th century was dominated in its early stage by Constantine the Great and the First Council of Nicaea of 325, which was the beginning of the period of the First seven Ecumenical Councils (325–787), and in its late stage by the Edict of Thessalonica of 380, which made Nicene Christianity the state church of the Roman Empire.
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 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.
In 6th-century Christianity, Roman Emperor Justinian launched a military campaign in Constantinople to reclaim the western provinces from the Germans, starting with North Africa and proceeding to Italy. Though he was temporarily successful in recapturing much of the western Mediterranean he destroyed the urban centers and permanently ruined the economies in much of the West. Rome and other cities were abandoned. In the coming centuries the Western Church, as virtually the only surviving Roman institution in the West, became the only remaining link to Greek culture and civilization.
Christianity in late antiquity traces Christianity during the Christian Roman Empire — the period from the rise of Christianity under Emperor Constantine, until the fall of the Western Roman Empire. The end-date of this period varies because the transition to the sub-Roman period occurred gradually and at different times in different areas. One may generally date late ancient Christianity as lasting to the late 6th century and the re-conquests under Justinian of the Byzantine Empire, though a more traditional end-date is 476, the year in which Odoacer deposed Romulus Augustus, traditionally considered the last western emperor.
Salome was an Armenian princess from the Arsacid dynasty who was married into the Chosroid Dynasty of Iberia. She was a daughter of King Tiridates III of Armenia and Queen Ashkhen. She is known from the early medieval Georgian chronicle Life of Kings. In Georgian tradition, she is referred to as Salome of Ujarma after a castle where she is credited to have erected a cross. She has been canonized by the Armenian and Georgian churches. Local canonisations are recognised throughout the Orthodox Church.
The Christianization of Iberia refers to the spread of Christianity in the early 4th century by the sermon of Saint Nino in an ancient Georgian kingdom of Kartli, known as Iberia in classical antiquity, which resulted in declaring it as a state religion by then-pagan King Mirian III of Iberia. Per Sozomen, this led the king's "large and warlike barbarian nation to confess Christ and renounce the religion of their fathers", as the polytheistic Georgians had long-established anthropomorphic idols, known as the "Gods of Kartli". The king would become the main sponsor, architect, initiator and an organizing power of all building processes. Per Socrates of Constantinople, the "Iberians first embraced the Christian faith" alongside the Abyssinians, but the exact date of an event is still debated. Georgian monarchs, alongside the Armenians, were among the first anywhere in the world to convert to a Christian faith. Prior to the escalation of Armeno-Georgian ecclesiastical rivalry and the christological controversies their Caucasian Christianity was extraordinarily inclusive, pluralistic and flexible that only saw the rigid ecclesiological hierarchies established much later, particularly as "national" churches crystallized from the 6th century. Despite the tremendous diversity of the region, the christianization process was a pan-regional and a cross-cultural phenomenon in the Caucasus, Eurasia's most energetic and cosmopolitan zones throughout the late antiquity, hard enough to place Georgians and Armenians unequivocally within any one major civilization. The Jews of Mtskheta, the royal capital of Kartli, that did play a significant role in the Christianization of the kingdom, would give a strong impetus to deepen the ties between the Georgian monarchy and the Holy Land leading to an increasing presence of Georgians in Palestine, as the activities of Peter the Iberian and other pilgrims confirm, including the oldest attested Georgian Bir el Qutt inscriptions found in the Judaean Desert alongside the pilgrim graffiti of Nazareth and Sinai.
Christianization of the Franks was the process of converting the pagan Franks to Catholicism during the late 5th century and early 6th century. It was started by Clovis I, regulus of Tournai, with the insistence of his wife, Clotilde and Saint Remigius, the bishop of Reims.