SabelliusSabellius (fl. ca. 215) was a third-century priest and theologian who most likely taught in Rome, but may have been a North African from Libya. Basil and others call him a Libyan from Pentapolis, but this seems to rest on the fact that Pentapolis was a place where the teachings of Sabellius thrived, according to Dionysius of Alexandria, c. 260. What is known of Sabellius is drawn mostly from the polemical writings of his opponents.
DidacheThe Didache (ˈdɪdəkeː,_-ki; Didakhé), also known as The Lord's Teaching Through the Twelve Apostles to the Nations (Διδαχὴ Κυρίου διὰ τῶν δώδεκα ἀποστόλων τοῖς ἔθνεσιν), is a brief anonymous early Christian treatise (ancient church order) written in Koine Greek, dated by modern scholars to the first or (less commonly) second century AD. The first line of this treatise is: "The teaching of the Lord to the Gentiles (or Nations) by the twelve apostles".
Fall of manThe fall of man, the fall of Adam, or simply the Fall, is a term used in Christianity to describe the transition of the first man and woman from a state of innocent obedience to God to a state of guilty disobedience. The doctrine of the Fall comes from a biblical interpretation of Genesis, chapters 1–3. At first, Adam and Eve lived with God in the Garden of Eden, but the serpent tempted them into eating the fruit from the tree of knowledge of good and evil, which God had forbidden.
FilioqueFilioque (ˌfɪliˈoʊkwi,_-kweɪ ; filiˈokwe), a Latin term meaning "and from the Son," was added to the original Niceno-Constantinopolitan Creed (commonly known as the Nicene Creed), and has been the subject of great controversy between Eastern and Western Christianity. The term refers to the Son, Jesus Christ, with the Father, as the one shared origin of the Holy Spirit. It is not in the original text of the Creed, attributed to the First Council of Constantinople (381), which says that the Holy Spirit proceeds "from the Father", without additions of any kind, such as "and the Son" or "alone".
TritheismTritheism (from Greek τριθεΐα, "three divinity") is a nontrinitarian Christian heresy in which the unity of the Trinity and thus monotheism are denied. It represents more a "possible deviation" than any actual school of thought positing three separate deities. It was usually "little more than a hostile label" applied to those who emphasized the individuality of each hypostasis or divine person—Father, Son and Holy Spirit—over the unity of the Trinity as a whole. The accusation was especially popular between the 3rd and 7th centuries AD.
Epiphanius of SalamisEpiphanius of Salamis (Ἐπιφάνιος; c. 310–320 – 403) was the bishop of Salamis, Cyprus, at the end of the 4th century. He is considered a saint and a Church Father by both the Eastern Orthodox and Catholic Churches. He gained a reputation as a strong defender of orthodoxy. He is best known for composing the Panarion, a compendium of eighty heresies, which included also pagan religions and philosophical systems.
CyprianCyprian (ˈsɪpriən; Thaschus Caecilius Cyprianus; 210 – 14 September 258 AD) was a bishop of Carthage and an early Christian writer of Berber descent, many of whose Latin works are extant. He is recognized as a saint in the Western and Eastern churches. He was born around the beginning of the 3rd century in North Africa, perhaps at Carthage, where he received a classical education. Soon after converting to Christianity, he became a bishop in 249.
God the SonGod the Son (Θεὸς ὁ υἱός, Deus Filius) is the second person of the Trinity in Christian theology. The doctrine of the Trinity identifies the Logos as the incarnation of God. United in essence (consubstantial), but distinct in person with regard to God the Father and God the Holy Spirit (the first and third persons of the Trinity). The phrase "God the Son" is not found in the Bible, but is found in later Christian sources. By scribal error the term is in one medieval manuscript, MS No.
Arian controversyThe Arian controversy was a series of Christian disputes about the nature of Christ that began with a dispute between Arius and Athanasius of Alexandria, two Christian theologians from Alexandria, Egypt. The most important of these controversies concerned the relationship between the substance of God the Father and the substance of His Son. Emperor Constantine, through the Council of Nicaea in 325, attempted to unite Christianity and establish a single, imperially approved version of the faith.
