Canon law is a set of ordinances and regulations made by ecclesiastical authority for the government of a Christian organization or church and its members.
Religious law includes ethical and moral codes taught by religious traditions. Different religious systems hold sacred law in a greater or lesser degree of importance to their belief systems, with some being explicitly antinomian whereas others are nomistic or "legalistic" in nature. In particular, religions such as Judaism, Islam and the Baháʼí Faith teach the need for revealed positive law for both state and society, whereas other religions such as Christianity generally reject the idea that this is necessary or desirable and instead emphasise the eternal moral precepts of divine law over the civil, ceremonial or judicial aspects, which may have been annulled as in theologies of grace over law.
The Eastern Catholic Churches or Oriental Catholic Churches, also called the Eastern-Rite Catholic Churches, Eastern Rite Catholicism, or simply the Eastern Churches, are 23 Eastern Christian autonomous particular churches of the Catholic Church, in full communion with the Pope in Rome. Although they are distinct theologically, liturgically, and historically from the Latin Church, they are all in full communion with it and with each other. Eastern Catholics are a minority within the Catholic Church; of the 1.3 billion Catholics in communion with the Pope, approximately 18 million are members of the eastern churches. The largest numbers of Eastern Catholics may be found in Eastern Europe, Eastern Africa, the Middle East, and India. As of 2022, the Syro-Malabar Church is the largest Eastern Catholic Church, followed by the Ukrainian Greek Catholic Church.
In Catholic canon law, affinity is an impediment to marriage of a couple due to the relationship which either party has as a result of a kinship relationship created by another marriage or as a result of extramarital intercourse. The relationships that give rise to the impediment have varied over time. Marriages and sexual relations between people in an affinity relationship are regarded as incest.
An ordinary is an officer of a church or civic authority who by reason of office has ordinary power to execute laws.
A coadjutor bishop is a bishop in the Catholic, Anglican, and (historically) Eastern Orthodox churches whose main role is to assist the diocesan bishop in the administration of the diocese. The coadjutor is a bishop himself, although he is also appointed as vicar general. The coadjutor bishop is, however, given authority beyond that ordinarily given to the vicar general, making him co-head of the diocese in all but ceremonial precedence. In modern times, the coadjutor automatically succeeds the diocesan bishop upon the latter's retirement, removal, or death.
The Apostolic Canons, also called Apostolic canons, Ecclesiastical Canons of the Same Holy Apostles, or Canons of the Holy Apostles, is a 4th-century Syrian Christian text. It is an Ancient Church Order, a collection of ancient ecclesiastical canons concerning the government and discipline of the Early Christian Church, allegedly written by the Apostles. This text is an appendix to the eighth book of the Apostolic Constitutions. Like the other Ancient Church Orders, the Apostolic Canons uses a pseudepigraphic form.
The canon law of the Catholic Church is "how the Church organizes and governs herself". It is the system of laws and ecclesiastical legal principles made and enforced by the hierarchical authorities of the Catholic Church to regulate its external organization and government and to order and direct the activities of Catholics toward the mission of the Church. It was the first modern Western legal system and is the oldest continuously functioning legal system in the West, while the unique traditions of Eastern Catholic canon law govern the 23 Eastern Catholic particular churches sui iuris.
Enclosed religious orders are religious orders whose members strictly separate themselves from the affairs of the external world. The term cloistered is synonymous with enclosed. In the Catholic Church, enclosure is regulated by the code of canon law, either the Latin code or the Oriental code, and also by the constitutions of the specific order. It is practised with a variety of customs according to the nature and charism of the community in question. This separation may involve physical barriers such as walls and grilles, with entry restricted for other people and certain areas exclusively permitted to the members of the convent. Outsiders may only temporarily enter this area under certain conditions. The intended purpose for such enclosure is to prevent distraction from prayer and the religious life and to keep an atmosphere of silence.
A nomocanon is a collection of ecclesiastical law, consisting of the elements from both the civil law and the canon law. Nomocanons form part of the canon law of the Eastern Catholic Churches and of the Eastern Orthodox Church.
The Corpus Juris Canonici is a collection of significant sources of the Canon law of the Catholic Church that was applicable to the Latin Church. It was replaced by the 1917 Code of Canon Law which went into effect in 1918. The 1917 Code was later replaced by the 1983 Code of Canon Law, the codification of canon law currently in effect for the Latin Church.
Under Pope Pius XII, there were the several reforms of Catholic Eastern canon law applying to the Eastern Catholic Churches.
The 1917 Code of Canon Law, also referred to as the Pio-Benedictine Code, is the first official comprehensive codification of Latin canon law.
The 1983 Code of Canon Law, also called the Johanno-Pauline Code, is the "fundamental body of ecclesiastical laws for the Latin Church". It is the second and current comprehensive codification of canonical legislation for the Latin Church of the Catholic Church. The 1983 Code of Canon Law was promulgated on 25 January 1983 by John Paul II and took legal effect on the First Sunday of Advent 1983. It replaced the 1917 Code of Canon Law which had been promulgated by Benedict XV on 27 May 1917.
The Catholic Church utilizes the oldest continuously functioning legal system in the West, much later than Roman law but predating the evolution of modern European civil law traditions. The history of Latin canon law can be divided into four periods: the jus antiquum, the jus novum, the jus novissimum and the Code of Canon Law. In relation to the Code, history can be divided into the jus vetus and the jus novum. Eastern canon law developed separately.
In canon law, a canon designates some law promulgated by a synod, an ecumenical council, or an individual bishop.
The Eastern Catholic canon law is the law of the 23 Catholic sui juris (autonomous) particular churches of the Eastern Catholic tradition. Eastern Catholic canon law includes both the common tradition among all Eastern Catholic Churches, now chiefly contained in the Code of Canons of the Eastern Churches, as well as the particular law proper to each individual sui juris particular Eastern Catholic Church. Oriental canon law is distinguished from Latin canon law, which developed along a separate line in the remnants of the Western Roman Empire, and is now chiefly codified in the 1983 Code of Canon Law.
The jurisprudence of Catholic canon law is the complex of legal theory, traditions, and interpretative principles of Catholic canon law. In the Latin Church, the jurisprudence of canon law was founded by Gratian in the 1140s with his Decretum. In the Eastern Catholic canon law of the Eastern Catholic Churches, Photios holds a place similar to that of Gratian for the West.
The following outline is provided as an overview of and topical guide to the canon law of the Catholic Church:
