In the later organization of the Roman Empire, the increasingly subdivided provinces were administratively associated in a larger unit, the diocese (Latindioecesis, from the Greek term διοίκησις, meaning "administration").[2]
Christianity was given legal status in 313 with the Edict of Milan. Churches began to organize themselves into dioceses based on the civil dioceses, not on the larger regional imperial districts.[3] These dioceses were often smaller than the provinces. Christianity was declared the Empire's official religion by Theodosius I in 380. Constantine I in 318 gave litigants the right to have court cases transferred from the civil courts to the bishops.[4] This situation must have hardly survived Julian, 361–363. Episcopal courts are not heard of again in the East until 398 and in the West in 408. The quality of these courts was low, and not above suspicion as the Bishop of Alexandria Troas found that clergy were making a corrupt profit. Nonetheless, these courts were popular as people could get quick justice without being charged fees.[5] Bishops had no part in the civil administration until the town councils, in decline, lost much authority to a group of 'notables' made up of the richest councilors, powerful and rich persons legally exempted from serving on the councils, retired military, and bishops post-AD 450. As the Western Empire collapsed in the 5th century, bishops in Western Europe assumed a larger part of the role of the former Roman governors. A similar, though less pronounced, development occurred in the East, where the Roman administrative apparatus was largely retained by the Byzantine Empire. In modern times, many dioceses, though later subdivided, have preserved the boundaries of a long-vanished Roman administrative division. For Gaul, Bruce Eagles has observed that "it has long been an academic commonplace in France that the medieval dioceses, and their constituent pagi, were the direct territorial successors of the Roman civitates."[6]
Modern usage of 'diocese' tends to refer to the sphere of a bishop's jurisdiction. This became commonplace during the self-conscious "classicizing" structural evolution of the Carolingian Empire in the 9th century, but this usage had itself been evolving from the much earlier parochia ("parish"; Late Latin derived from the Greek παροικία paroikia), dating from the increasingly formalized Christian authority structure in the 4th century.[7]
The term "archdiocese" is not found in Catholic canon law, with the terms "diocese" and "episcopal see" being applicable to the area under the ecclesiastical jurisdiction of any bishop.[8] If the title of archbishop is granted on personal grounds to a diocesan bishop, his diocese does not thereby become an archdiocese.[better source needed]
The Canon Law of the Catholic Church defines a diocese as "a portion of the people of God which is entrusted to a bishop for him to shepherd with the cooperation of the presbyterium, so that, adhering to its pastor and gathered by him in the Holy Spirit through the gospel and the Eucharist, it constitutes a particular church in which the one, holy, catholic, and apostolic Church of Christ is truly present and operative."[9]
Also known as particular churches or local churches, dioceses are under the authority of a bishop. They are described as ecclesiastical districts defined by geographical territory. Dioceses are often grouped by the Holy See into ecclesiastical provinces for greater cooperation and common action among regional dioceses. Within an ecclesiastical province, one diocese can be designated an "archdiocese" or "metropolitan archdiocese", establishing centrality within an ecclesiastical province and denoting a higher rank. Archdioceses are often chosen based on their population and historical significance. All dioceses and archdioceses, and their respective bishops or archbishops, are distinct and autonomous. An archdiocese has limited responsibilities within the same ecclesiastical province assigned to it by the Holy See.[10]
In the Eastern Catholic Churches that are in communion with the Pope, the equivalent entity is called an eparchy or "archeparchy", with an "eparch" or "archeparch" serving as the ordinary.[12]
The Eastern Orthodox Church calls dioceses episkopies (from the Greek ἐπισκοπή) in the Greek tradition and eparchies (from ἐπαρχία) in the Slavic tradition.[citation needed]
After the English Reformation, the Church of England retained the existing diocesan structure which remains throughout the Anglican Communion. The one change is that the areas administered under the Archbishop of Canterbury and Archbishop of York are properly referred to as dioceses, not archdioceses: they are the metropolitan bishops of their respective provinces and bishops of their own diocese and have the position of archbishop.
The Anglican Church in Aotearoa, New Zealand and Polynesia in its constitution uses the specific term "Episcopal Unit" for both dioceses and pīhopatanga because of its unique three-tikanga (culture) system. Pīhopatanga are the tribal-based jurisdictions of Māoripīhopa (bishops) which overlap with the "New Zealand dioceses" (i.e. the geographical jurisdictions of the pākehā (European) bishops); these function like dioceses, but are never called so.[13]
From about the 13th century until the German mediatization of 1803, the majority of the bishops of the Holy Roman Empire were prince-bishops, and as such exercised political authority over a principality, their so-called Hochstift, which was distinct, and usually considerably smaller than their diocese, over which they only exercised the usual authority of a bishop.
Some American Lutheran church bodies such as the Evangelical Lutheran Church in America have a bishop acting as the head of the synod,[16] but the synod does not have dioceses and archdioceses as the churches listed above. Rather, it is divided into a middle judicatory.[17]
The Church of God in Christ (COGIC) has dioceses throughout the United States. In the COGIC, most states are divided into at least three or more dioceses that are each led by a bishop (sometimes called a "state bishop"); some states have as many as ten dioceses. These dioceses are called "jurisdictions" within COGIC.[19][20]
An organization created by the Gnostic group known as the Cathars in 1167 called the Council of Saint-Félix organized Cathar communities into bishoprics, which each had a bishop presiding over a specific division, even though there was no central authority.[21]
In the United Methodist Church (the United States and some other countries), a bishop is given oversight over a geographical area called an episcopal area. Each episcopal area contains one or more annual conferences, which is how the churches and clergy under the bishop's supervision are organized. Thus, the use of the term "diocese" referring to geography is the most equivalent in the United Methodist Church, whereas each annual conference is part of one episcopal area (though that area may contain more than one conference). The African Methodist Episcopal Church has a similar structure to the United Methodist Church, also using the Episcopal Area. The bishops govern the church as a single bench.[citation needed]
In the British Methodist Church and Irish Methodist Church, the closest equivalent to a diocese is the 'circuit'. Each local church belongs to a circuit, and the circuit is overseen by a superintendent minister who has pastoral charge of all the circuit churches (though in practice he or she delegates such charge to other presbyters who each care for a section of the circuit and chair the local church meetings as deputies of the superintendent). This echoes the practice of the early church where the bishop was supported by a bench of presbyters. Circuits are grouped together to form Districts. All of these, combined with the local membership of the Church, are referred to as the "Connexion". This 18th-century term, endorsed by John Wesley, describes how people serving in different geographical centres are 'connected' to each other. Personal oversight of the Methodist Church is exercised by the President of the Conference, a presbyter elected to serve for a year by the Methodist Conference; such oversight is shared with the Vice-President, who is always a deacon or layperson. Each District is headed by a 'Chair', a presbyter who oversees the district. Although the district is similar in size to a diocese, and Chairs meet regularly with their partner bishops, the Methodist superintendent is closer to the bishop in function than is the chair. The purpose of the district is to resource the circuits; it has no function otherwise.[citation needed]
Most Baptists hold that no church or ecclesiastical organization has inherent authority over a Baptist church. Churches can properly relate to each other under this polity only through voluntary cooperation, never by any sort of coercion. Furthermore, this Baptist polity calls for freedom from governmental control.[23] Most Baptists believe in "Two offices of the church"—pastor-elder and deacon—based on certain scriptures (1 Timothy 3:1–13; Titus 1–2). Exceptions to this local form of local governance include a few churches that submit to the leadership of a body of elders, as well as the Episcopal Baptists that have an Episcopal system.[citation needed]
^Webster's Encyclopedic Unabridged Dictionary of the English Language, 1989
^Doyle, Dennis M. (2016). What is Christianity?. Paulist Press. ISBN9781587686207.
^Bright, William (1860). A History of the Church, from the Edict of Milan, A.D. 313, to the Council of Chalcedon, A.D. 451. J.H. and Jas. Parker. p. 4.
^Bateman, C.G. (January 17, 2018). "The Supreme 'Courts' of the Roman Empire: Constantine's Judicial Role for the Bishops". SSRN. doi:10.2139/ssrn.2938800. SSRN2938800.
^Eagles, Bruce (2004). "Britons and Saxons on the Eastern Boundary of the Civitas Durotrigum". Britannia. Vol. 35. p. 234., noting for instance Wightman, E.M. (1985). Gallia Belgica. London. p. 26.{{cite book}}: CS1 maint: location missing publisher (link)
