The words
schism and
schismatic are used to denote splits within a church, denomination or religious body. In this context, "schismatic", as a noun, denotes a person who creates or incites schism in a church or a person who is a member of a splinter Church; as an adjective, "schismatic" refers to ideas and activities that are thought to lead to or constitute schism, and ultimately to departure from what the user of the word considers to be the true Christian Church. These words have been used to denote both the phenomenon of Christian group-splintering in general, and certain significant historical splits in particular. One can make a distinction between
heresy and
schism. Heresy is rejection of a
doctrine that a Church considered to be essential. Schism is a rejection of
communion with the authorities of a Church, and not every break of communion is necessarily about doctrine, as is clear from examples such as the
Western Schism and the breaking of the communion that existed between
Patriarch Bartholomew I of Constantinople and
Archbishop Christodoulos of Athens in 2004. However, when for any reason people withdraw from communion, two distinct ecclesiastical entities may result, each of which, or at least some members thereof, may then accuse the other(s) of heresy. In
Roman Catholic Church canon law, an act of schism, like an act of
apostasy or
heresy, automatically brings the penalty of
excommunication on the individual who commits it. As stated in canon 1312 §1 1° of the
1983 Code of Canon Law, this penalty is intended to be medicinal, so as to lead to restoration of unity. Roman Catholic theology considers formal schismatics to be outside the Church, understanding by "formal schismatics" "persons who, knowing the true nature of the Church, have personally and deliberately committed the sin of schism". The situation, for instance, of those who have been brought up from childhood within a group not in full communion with
Rome, but who have orthodox faith, is different: these are considered to be imperfectly, though not fully, related to the Church. what is commonly called the
Nicene Creed declares belief in the
One Holy Catholic and Apostolic Church. Some who accept this creed believe they should be united in a single Church or group of Churches in communion with each other. Others who accept this creed believe it does not speak of a visible organization but of all those baptized who hold the Christian faith, referred to as "
Christendom". Some churches consider themselves to be the One Holy Catholic and Apostolic Church. For instance, the
Roman Catholic Church claims that title and considers the
Eastern Orthodox Church to be in schism, while the Eastern Orthodox Church also claims that title and holds the view that the Catholic Church is schismatic. Some
Protestant Churches believe that they also represent the One Holy Catholic and Apostolic Church and consider the Catholic and Orthodox Churches to be in error, while others do not expect a union of all Christian churches on earth. See also
One true church and
Great Apostasy. Protestant groups, lacking the stronger traditional authority-structures of (say) Roman Catholicism or Eastern Orthodoxy, and often riven by politico-national divides (sometimes resulting from
cuius regio, eius religio), show a high degree of fissibility, which ecumenical efforts may only intensify. Schisms have occurred particularly frequently among
Anabaptists, to the extent that divisions over even minute details of doctrine and theology are common and scholars have dubbed the phenomenon
Täuferkrankheit or "The Anabaptist Disease". Emphasizing fully voluntary membership in the church, and without an established authority of hierarchical structure, Anabaptists, especially
Mennonites have experienced dozens of schisms, resulting in the establishment of dozens of various unaffiliated Mennonite churches. A current dispute with an acknowledged risk of schism for the
Anglican Communion involves
responses to homosexuality. In 2018
Eastern Orthodoxy suffered a schism,
the 2018 Moscow-Constantinople schism between the primatial See of Eastern Orthodoxy, the
Ecumenical Patriarchate of Constantinople and the
Russian Orthodox Church over the issue of Constantinople granting
autocephaly to the
Orthodox Church of Ukraine. == Hinduism ==