Eastern Christianity comprises Christian traditions and church families that originally developed during classical and late antiquity in Western Asia, Egypt, Northeast Africa, Eastern Europe, Southeastern Europe, Asia Minor, the Malabar coast of southern India, and parts of the Far East. The term does not describe a single communion or religious denomination. Major Eastern Christian bodies include the Eastern Orthodox Church, the Oriental Orthodox Churches, the Eastern Catholic Churches, Protestant Eastern Christian churches who are Protestant in theology but Eastern Christian in cultural practice, and the denominations descended from the historic Church of the East. The various Eastern churches do not normally refer to themselves as "Eastern", with the exception of the Assyrian Church of the East and the Ancient Church of the East.
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The Eastern Catholic Churches or Oriental Catholic Churches, also called the Eastern-rite Catholic Churches, Eastern Rite Catholicism, or simply the Eastern Churches and in some historical cases referred to as Uniates, are twenty-three Eastern Christian sui iuris (autonomous) particular churches of the Catholic Church, in full communion with the pope in Rome. Although they are distinct from the Roman Catholic Church, they are all in full communion with it and with each other.
Traditionalist Catholicism is a set of religious beliefs and practices comprising customs, traditions, liturgical forms, public and private, individual and collective devotions, and presentations of Catholic Church teachings that were in vogue in the decades that immediately preceded the Second Vatican Council (1962–65). It is associated in particular with attachment to the 1570–1970 form of the Roman Rite Mass, which traditionalist Catholics call "the Latin Mass", "the traditional Mass, the ancient Mass, "the immemorial Latin Mass", "the Mass of All Time", "the Mass of the ages" or the Mass of the Apostles", "the Traditional Latin Mass", or "the Extraordinary Form of the Roman Rite".
The Catholic Church, sometimes referred to as the Roman Catholic Church, is the largest Christian church, with approximately 1.3 billion baptised Catholics worldwide as of 2018. As the world's oldest and largest continuously functioning international institution, it has played a prominent role in the history and development of Western civilization. The church consists of 24 particular churches and almost 3,500 dioceses and eparchies around the world. The pope, who is the Bishop of Rome, is the chief pastor of the church, entrusted with the universal Petrine ministry of unity and correction. The church's administration, the Holy See, is in the Vatican City, a tiny enclave of Rome, of which the pope is head of state.
The Ruthenian Greek Catholic Church, also known in the United States as the Ruthenian Byzantine Catholic Church, is an Eastern Catholic church that uses the Byzantine Rite for its liturgies, laws, and cultural identity. It is one of the 23 Eastern Catholic churches that are in full communion with the Holy See. There are two main communities within the church: American and European. In the United States, the Byzantine Catholic Metropolitan Church of Pittsburgh is self-governing. In Europe, Ruthenian Catholics are immediately subject to the Holy See. The European branch has an eparchy in Ukraine and another in the Czech Republic.
The Russian Greek Catholic Church, Russian Byzantine Catholic Church or simply Russian Catholic Church, is a sui iuris Byzantine Rite Eastern Catholic jurisdiction of the worldwide Catholic Church. Historically, it represents the first reunion of members of the Russian Orthodox Church with the Roman Catholic Church. It is now in full communion with and subject to the authority of the Pope of Rome as defined by Eastern canon law.
Catholic Mariology refers to Mariology – the systematic study of the person of Mary, mother of Jesus, and of her place in the Economy of Salvation – within Catholic theology. Mary is seen as having a singular dignity above the saints. The Catholic Church teaches that she was conceived without original sin, therefore receiving a higher level of veneration than all other saints. Catholic Mariology thus studies not only her life but also the veneration of her in daily life, prayer, hymns, art, music, and architecture in modern and ancient Christianity throughout the ages.
The Roman Rite is the main liturgical rite of the Latin or Western Church, the largest of the sui iuris particular Churches that make up the Catholic Church. It developed in the Latin language in the city of Rome and, while distinct Latin liturgical rites such as the Ambrosian Rite remain, the Roman Rite has over time been adopted almost everywhere in the Western Church. In medieval times there were very many local variants, even if they did not all amount to distinct rites, but uniformity grew as a result of the invention of printing and in obedience to the decrees of the 1545–1563 Council of Trent. Several Latin liturgical rites that survived into the 20th century were abandoned voluntarily in the wake of the Second Vatican Council. The Roman Rite is now the most widespread liturgical rite not only in the Latin Church but in Christianity as a whole.
Catholicity is a concept pertaining to beliefs and practices widely accepted across numerous Christian denominations, most notably those that describe themselves as Catholic in accordance with the Four Marks of the Church, as expressed in the Nicene Creed of the First Council of Constantinople in 381: "[I believe] in one, holy, catholic, and apostolic Church."
The sacrament of holy orders in the Catholic Church includes three orders: bishop, priest, and deacon. In the phrase "holy orders", the word "holy" simply means "set apart for some purpose." The word "order" designates an established civil body or corporation with a hierarchy, and ordination means legal incorporation into an order. In context, therefore, a group with a hierarchical structure that is set apart for ministry in the Church.
The priesthood is one of the three holy orders of the Catholic Church, comprising the ordained priests or presbyters. The other two orders are the bishops and the deacons. Church doctrine also sometimes refers to all baptised Catholics as the "common priesthood".
In the Catholic Church, a bishop is an ordained minister who holds the fullness of the sacrament of holy orders and is responsible for teaching doctrine, governing Catholics in his jurisdiction, sanctifying the world and representing the Church. Catholics trace the origins of the office of bishop to the apostles, who it is believed were endowed with a special charism by the Holy Spirit at Pentecost. Catholics believe this special charism has been transmitted through an unbroken succession of bishops by the laying on of hands in the sacrament of holy orders.
Catholic theology is the understanding of Catholic doctrine or teachings, and results from the studies of theologians. It is based on canonical scripture, and sacred tradition, as interpreted authoritatively by the magisterium of the Catholic Church. This article serves as an introduction to various topics in Catholic theology, with links to where fuller coverage is found.
Mariology is the theological study of Mary, the mother of Jesus. Mariology seeks to relate doctrine or dogma about Mary to other doctrines of the faith, such as those concerning Jesus and notions about redemption, intercession and grace. Christian Mariology aims to place the role of the historic Mary in the context of scripture, tradition and the teachings of the Church on Mary. In terms of social history, Mariology may be broadly defined as the study of devotion to and thinking about Mary throughout the history of Christianity.
The following outline is provided as an overview of and topical guide to Christianity:
In the history of the Catholic Church, women have played a variety of roles and the church has affected societal attitudes to women worldwide in significant ways. Women constitute the majority of members of consecrated life in the Catholic Church: in 2010, there were around 721,935 professed women religious.
This is a glossary of terms used within the Catholic Church.
A particular church is an ecclesiastical community of faithful headed by a bishop, as defined by Catholic canon law and ecclesiology. A liturgical rite depends on the particular church the bishop belongs to. Thus "particular church" refers to an institution, and "liturgical rite" to its practices.
The Latin Church, also known as the Roman Catholic Church or the Western Church is the largest particular church sui iuris of the Catholic Church, and employs the Latin liturgical rites. It is one of 24 such churches, the 23 others forming the Eastern Catholic Churches. It is headed by the bishop of Rome, the pope – traditionally also called the patriarch of the West – with his cathedra in this role at the Archbasilica of Saint John Lateran in Rome, Italy. The Latin Church traces its history to the earliest days of Christianity through its direct leadership under the Holy See that according to Catholic tradition was founded by Peter and Paul.
Catholic Churchportal 
