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Catholic canon law
There are two kinds of particular churches:
- Local particular churches. A diocese or eparchy is the most familiar form of such local particular churches, but there are other forms, including that of territorial abbacy, apostolic vicariate, apostolic prefecture, military ordinariate, personal ordinariate, and personal prelature.
- Autonomous particular churches sui iuris. In this context the descriptors autonomous (Greek: αὐτόνομος, translit. autónomos) and sui iuris (Latin) are synonymous, each meaning "of its own law". These are aggregations of local diocesan churches that share a specific liturgical, theological and canonical tradition. They have also been called "particular Churches or rites". The largest such autonomous particular church is the Latin Church. The others 23 are referred to collectively as the Eastern Catholic Churches, headed by bishops who have the title and rank of Patriarch or Major Archbishop.
Autonomous particular churches
There are 24 autonomous churches: one Latin Church and twenty-three Eastern Catholic Churches, a distinction by now more historical than geographical. The term sui iuris means, literally, "of its own law", or self-governing. Although all of the particular churches espouse the same beliefs and faith, their distinction lies in their varied expression of that faith through their traditions, disciplines, and canon law. All are in communion with the Holy See.
For this kind of particular church, the 1983 Code of Canon Law uses the unambiguous phrase "autonomous ritual Church" (Latin: Ecclesia ritualis sui iuris). The 1990 Code of Canons of the Eastern Churches, which is concerned principally with what the Second Vatican Council called "particular Churches or rites", shortened this to "autonomous Church" (Latin: Ecclesia sui iuris).[original research?][not in citation given]
Communion between particular churches has existed since the Apostolic Age: "Among these manifold particular expressions of the saving presence of the one Church of Christ, there are to be found, from the times of the Apostles on, those entities which are in themselves Churches, because, although they are particular, the universal Church becomes present in them with all its essential elements."
Local particular churches
"A diocese is a section of the People of God entrusted to a bishop to be guided by him with the assistance of his clergy so that, loyal to its pastor and formed by him into one community in the Holy Spirit through the Gospel and the Eucharist, it constitutes one particular church in which the one, holy, catholic and apostolic Church of Christ is truly present and active."
The 1983 Code of Canon Law, which is concerned with the Latin Church alone and so with only one autonomous particular church, uses the term "particular Church" only in the sense of "local Church", as in its Canon 373:
"It is within the competence of the supreme authority alone to establish particular Churches; once they are lawfully established, the law itself gives them juridical personality."
The standard form of these local or particular churches, each of which is headed by a bishop, is called a diocese in the Latin Church and an eparchy in the Eastern churches. At the end of 2011, the total number of all these jurisdictional areas (or "sees") was 2,834.
Local particular church of Rome
The Holy See, the Diocese of Rome, is seen as the central local church. The bishop, the Pope, is considered to be, in a unique sense, the successor of Saint Peter, the chief (or "prince") of the apostles. Quoting the Second Vatican Council's document Lumen gentium, the Catechism of the Catholic Church states: "The Pope, Bishop of Rome and Peter's successor, 'is the perpetual and visible source and foundation of the unity both of the bishops and of the whole company of the faithful.'"
Unlike "families" or "federations" of churches formed through the grant of mutual recognition by distinct ecclesial bodies, the Catholic Church considers itself a single church ("one Body") composed of a multitude of particular churches, each of which, as stated, is an embodiment of the fullness of the one Catholic Church. For the particular churches within the Catholic Church, whether autonomous ritual churches (e.g., Coptic Church, Melkite Catholic Church, Armenian Catholic Church, etc.) or dioceses (e.g., Archdiocese of Birmingham, Archdiocese of Chicago, etc.), are seen as not simply branches, divisions or sections of a larger body. Theologically, each is considered to be the embodiment in a particular place or for a particular community of the one, whole Catholic Church. "It is in these and formed out of them that the one and unique Catholic Church exists."
- Particular Churches, in which and from which the one and only Catholic Church exists, are principally dioceses. Unless the contrary is clear, the following are equivalent to a diocese: a territorial prelature, a territorial abbacy, a vicariate apostolic, a prefecture apostolic and a permanently established apostolic administration. (Code of Canon Law, canon 368)
- Orientalium Ecclesiarum, 2
- Canon 27, quote: "A group of Christ's faithful hierarchically linked in accordance with law and given express or tacit recognition by the supreme authority of the Church is in this Code called an autonomous Church."
- Communionis Notio, 7)
- Second Vatican Council, Decree on the Pastoral Office of Bishops in the Church Christus Dominus,11
- Code of Canon Law, canon 373
- Central Statistics Office (March 2012). Annuario Pontificio (Pontifical Yearbook). Libreria Editrice Vaticana. p. 1142. ISBN 978-88-209-8722-0.
- Catechism of the Catholic Church, 882
- Also unlike the situation of those countries within the Commonwealth that consider the British monarch to be their head of state, but are nonetheless fully independent and quite distinct states, not just one state.
- Second Vatican Council, Dogmatic Decree on the Church Lumen gentium, 23
- "The particular Churches, insofar as they are 'part of the one Church of Christ' (Second Vatican Council: Decree Christus Dominus, 6/c), have a special relationship of mutual interiority with the whole, that is, with the universal Church, because in every particular Church 'the one, holy, catholic and apostolic Church of Christ is truly present and active' (Second Vatican Council: Decree Christus Dominus, 11/a). For this reason, the universal Church cannot be conceived as the sum of the particular Churches, or as a federation of particular Churches. It is not the result of the communion of the Churches, but, in its essential mystery, it is a reality ontologically and temporally prior to every individual particular Church" (Communionis notio, 9).