Arian controversy
The Arian controversy describes several controversies between the priest and theologian Arius and the Church Father, Bishop Athanasius related to Christology which divided the Catholic Church from bef...
Arian controversy - Wikipedia
Synods of Antioch
Beginning with three synods convened between 264 and 269 in the matter of Paul of Samosata, more than thirty councils were held in Antioch in ancient times. Most of these dealt with phases of the Ari...
First Council of Nicaea
The First Council of Nicaea (/naɪˈsiːə/; Greek: Νίκαια [ˈni:kaɪja]) was a council of Christian bishops convened in Nicaea in Bithynia by the Roman Emperor Constantine I in AD 325. This first ecum...
First Council of Nicaea - Wikipedia
Council of Rimini
The Council of Ariminum, also known after the city's modern name as the Council of Rimini, was an early Christian church synod.In 358, the Roman Emperor Constantius II requested two councils, one of t...
Council of Seleucia
The Council of Seleucia was an early Christian church synod at Seleucia Isauria (now Silifke, Turkey).In 358, the Roman Emperor Constantius II requested two councils, one of the western bishops at Ari...
First Council of Constantinople (360)
In 359, the Roman Emperor Constantius II requested a church council, at Constantinople, of both the eastern and western bishops, to resolve the split at the Council of Seleucia. According to Socrates ...
Quartodecimanism
Quartodecimanism (from the Vulgate Latin quarta decima in Leviticus 23:5, meaning fourteenth) refers to the custom of early Christians celebrating Passover beginning with the eve of the 14th day of Ni...
Homoousion
Homoousian (/ˌhɒmoʊˈuːsiən/ HOM-oh-OO-see-ən; Ancient Greek: ὁμοούσιος, from the Ancient Greek: ὁμός, homós, "same" and Ancient Greek: οὐσία, ousía, "essence, substance") is a technical...
Acacians
The Acacians, also known as the Homoeans, were an Arian sect which first emerged into distinctness as an ecclesiastical party some time before the convocation of the joint synods of Rimini and Seleuci...
Anomoeanism
In 4th century Christianity, the Anomoeans, also spelled "Anomeans" and known also as Heterousians, Aëtians, or Eunomians, were a sect that upheld an extreme form of Arianism, which denied not only th...
Primacy of the Roman Pontiff
The primacy of the Bishop of Rome is an ecclesiastical doctrine concerning the respect and authority that is due to the Bishop of Rome from other bishops and their sees. Together with the Filioque c...
Primacy of the Roman Pontiff - Wikipedia
Development of the Christian biblical canon
The Christian biblical canons are the books Christians regard as divinely inspired and constituting a Christian Bible. Books included in the Christian biblical canons of both the Old and New Testament...
Development of the Christian biblical canon - Wikipedia
Meletius of Lycopolis
Meletius (died after 325) was bishop of Lycopolis in Egypt. He is known mainly as the founder and namesake of the Meletians (c. 305), one of several schismatic sects in early church history which were...
Arius
Arius (Ancient Greek: Ἄρειος, AD 250 or 256–336) was an ascetic Christian presbyter of Libyan birth, possibly of Berber extraction, and priest in Alexandria, Egypt, of the church of the Baucalis....
Arius - Wikipedia
Easter
Easter (Old English usually Ēastrun, -on, or -an; also Ēastru, -o; and Ēostre), also called Pasch (derived, through Latin: Pascha and Greek Πάσχα Paskha, from Aramaic: פסחא‎, cognate to Heb...
Easter - Wikipedia
Arianism
Arianism is the nontrinitarian, heterodoxical teaching, first attributed to Arius (c. AD 250–336), a Christian presbyter in Alexandria, Egypt, concerning the relationship of God the Father to the Son ...
Arianism - Wikipedia
East-West Schism
The East–West Schism is the break of communion between what are now the Eastern Orthodox and Roman Catholic Churches which began in the 11th century.There had long been ecclesiastical differences and ...
East-West Schism - Wikipedia
Constantine I and Christianity
While the Roman Emperor Constantine the Great (reigned 306–337) ruled, Christianity began to transition to the dominant religion of the Roman Empire. Historians remain uncertain about Constantine's re...
Constantine I and Christianity - Wikipedia
Nicene Creed
The Nicene Creed (Greek: Σύμβολον τῆς Νίκαιας, Latin: Symbolum Nicaenum) is a profession of faith widely used in Christian liturgy.It is called Nicene /ˈnaɪsiːn/ because originally adopted in the cit...
Nicene Creed - Wikipedia