Papal infallibilityPapal infallibility is a dogma of the Catholic Church which states that, in virtue of the promise of Jesus to Peter, the Pope when he speaks ex cathedra is preserved from the possibility of error on doctrine "initially given to the apostolic Church and handed down in Scripture and tradition". It does not mean that the pope cannot sin or otherwise err in most situations. This doctrine, defined dogmatically at the First Vatican Council of 1869–1870 in the document Pastor aeternus, is claimed to have existed in medieval theology and to have been the majority opinion at the time of the Counter-Reformation.
DogmaDogma in the broad sense is any belief held unquestioningly and with undefended certainty. It may be in the form of an official system of principles or doctrines of a religion, such as Roman Catholicism, Judaism, or Protestantism, as well as the positions of a philosopher or of a philosophical school such as Stoicism. It may also be found in political belief systems, such as fascism, progressivism, liberalism, and conservatism. In the pejorative sense, dogma refers to enforced decisions, such as those of aggressive political interests or authorities.
SynodA synod (ˈsɪnəd) is a council of a Christian denomination, usually convened to decide an issue of doctrine, administration or application. The word synod comes from the σύνοδος ˈsinoðos, meaning "assembly" or "meeting"; the term is analogous with the Latin word concilium meaning "council". Originally, synods were meetings of bishops, and the word is still used in that sense in Catholicism, Oriental Orthodoxy and Eastern Orthodoxy. In modern usage, the word often refers to the governing body of a particular church, whether its members are meeting or not.
SacramentA sacrament is a Christian rite that is recognized as being particularly important and significant. There are various views on the existence, number and meaning of such rites. Many Christians consider the sacraments to be a visible symbol of the reality of God, as well as a channel for God's grace. Many denominations, including the Catholic, Lutheran, Anglican, Methodist, and Reformed, hold to the definition of sacrament formulated by Augustine of Hippo: an outward sign of an inward grace, that has been instituted by Jesus Christ.
SchismA schism (ˈsɪzəm , ˈskɪzəm, or, less commonly, ˈʃɪzəm ) is a division between people, usually belonging to an organization, movement, or religious denomination. The word is most frequently applied to a split in what had previously been a single religious body, such as the Great East–West Schism or the Western Schism. It is also used of a split within a non-religious organization or movement or, more broadly, of a separation between two or more people, be it brothers, friends, lovers, etc.
Sacred mysteriesSacred mysteries are the areas of supernatural phenomena associated with a divinity or a religious belief and praxis. Sacred mysteries may be either: Religious beliefs, rituals or practices which are kept secret from the uninitiated. Beliefs of the religion which are public knowledge but cannot be easily explained by normal rational or scientific means. A mystagogue or hierophant is a holder and teacher of secret knowledge in the former sense above, while mysticism may be defined as an area of philosophical or religious thought focusing on mysteries in the latter sense.
Council of HieriaThe iconoclast Council of Hieria was a Christian council of 754 which viewed itself as ecumenical, but was later rejected by the Second Council of Nicaea (787) and by Catholic and Orthodox churches, since none of the five major patriarchs were represented in Hieria. However it is preferred over Second Nicea by some Protestants. The Council of Hieria was summoned by the Byzantine Emperor Constantine V in 754 in the palace of Hieria at Chalcedon.
Byzantine IconoclasmThe Byzantine Iconoclasm (Eikonomachía) were two periods in the history of the Byzantine Empire when the use of s or icons was opposed by religious and imperial authorities within the Ecumenical Patriarchate (at the time still comprising the Roman-Latin and the Eastern-Orthodox traditions) and the temporal imperial hierarchy. The First Iconoclasm, as it is sometimes called, occurred between about 726 and 787, while the Second Iconoclasm occurred between 814 and 842.
