Arianism is a Christological doctrine considered heretical by all modern mainstream branches of Christianity. It is first attributed to Arius, a Christian presbyter who preached and studied in Alexandria, Egypt. Arian theology holds that Jesus Christ is the Son of God, who was begotten by God the Father with the difference that the Son of God did not always exist but was begotten/made before time by God the Father; therefore, Jesus was not coeternal with God the Father, but nonetheless Jesus began to exist outside time.
The Athanasian Creed — also called the Pseudo-Athanasian Creed or Quicunque Vult, which is both its Latin name and its opening words, meaning "Whosoever wishes" — is a Christian statement of belief focused on Trinitarian doctrine and Christology. Used by Christian churches since the early sixth century, it was the first creed to explicitly state the equality of the three hypostases of the Trinity. It differs from the Nicene-Constantinopolitan Creed and the Apostles' Creed in that it includes anathemas condemning those who disagree with its statements.
Filioque, a Latin term meaning "and from the Son", was added to the original 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 the addition "and the Son".
The Nicene Creed, also called the Creed of Constantinople, is the defining statement of belief of Nicene Christianity and in those Christian denominations that adhere to it. The original Nicene Creed was first adopted at the First Council of Nicaea in 325. According to a popular view forwarded by the Council of Chalcedon of 451, the Creed was amended in 381 by the First Council of Constantinople as "consonant to the holy and great Synod of Nice." However, there are some who comment on these ancient Councils who say "there is a failure of evidence" for this position since no one between the years of 381–451 thought of it in this light. Nonetheless, the amended form is presently referred to as the Nicene Creed or the Niceno-Constantinopolitan Creed.
In Christian theology, Sabellianism is the belief that there is only one Person in the Godhead. For example, Hanson defines Sabellianism as the "refusal to acknowledge the distinct existence of the Persons" and "Eustathius was condemned for Sabellianism. His insistence that there is only one distinct reality (hypostasis) in the Godhead, and his confusion about distinguishing Father, Son and Holy Spirit laid him open to such a charge." Condemned as heresy, Sabellianism has been rejected by the majority of Christian churches.
The Christian doctrine of the Trinity is the central doctrine concerning the nature of God in most Christian churches, which defines one God existing in three, coeternal, consubstantial divine persons: God the Father, God the Son and God the Holy Spirit, three distinct persons (hypostases) sharing one essence/substance/nature (homoousion).
Nontrinitarianism is a form of Christianity that rejects the mainstream Christian theology of the Trinity—the belief that God is three distinct hypostases or persons who are coeternal, coequal, and indivisibly united in one being, or essence. Certain religious groups that emerged during the Protestant Reformation have historically been known as antitrinitarian.
God the Son is the second Person of the Trinity in Christian theology. According to Christian doctrine, God the Son, in the form of Jesus Christ, is the incarnation of the eternal, pre-existent divine Logos through whom all things were created. Although the precise term "God the Son" does not appear in the Bible, it serves as a theological designation expressing the understanding of Jesus as a part of the Trinity, distinct yet united in essence with God the Father and God the Holy Spirit.
Binitarianism is a Christian theology of two persons, personas, or aspects in one substance/Divinity. Classically, binitarianism is understood as a form of monotheism—that is, that God is absolutely one being—and yet with binitarianism there is a "twoness" in God, which means one God family. The other common forms of monotheism are "unitarianism", a belief in one God with one person, and "trinitarianism", a belief in one God with three persons.
In Christian theology, the doctrine of incarnation teaches that the pre-existent divine person of Jesus Christ, God the Son, the second person of the Trinity, and the eternally begotten Logos, "was made flesh" by being conceived in the womb of a woman, the Virgin Mary, also known as the Theotokos. The doctrine of the incarnation then entails that Jesus was at the same time both fully God and fully human.
Perichoresis is the relationship of the three persons of the triune God to one another. The term was first used in Christian theology by the Church Fathers. The noun first appears in the writings of Maximus Confessor but the related verb perichoreo is found earlier in Gregory of Nazianzus. Gregory used it to describe the relationship between the divine and human natures of Christ as did John of Damascus, who also extended it to the "interpenetration" of the three persons of the Trinity, and it became a technical term for the latter. It has been given recent currency by such contemporary writers as Jürgen Moltmann, Miroslav Volf, John Zizioulas, Richard Rohr, and others.
Subordinationism is a Trinitarian doctrine wherein the Son is subordinate to the Father, not only in submission and role, but with actual ontological subordination to varying degrees. It posits a hierarchical ranking of the persons of the Social Trinity, implying ontological subordination of the persons of the Son and the Holy Spirit. It was condemned as heretical in the Second Council of Constantinople.
Social trinitarianism is a Christian interpretation of the Trinity as consisting of three persons in a loving relationship, which reflects a model for human relationships. The teaching emphasizes that God is an inherently social being. Human unity approaches conformity to the image of God's unity through self-giving, empathy, adoration for one another, etc. Such love is a fitting ethical likeness to God, but is in stark contrast to God's unity of being. Those who are often associated with this term include Jürgen Moltmann, Miroslav Volf, Elizabeth Johnson, Leonardo Boff, John Zizioulas, William Lane Craig and Catherine LaCugna.
Debate exists as to whether the earliest Church Fathers in Christian history believed in the doctrine of the Trinity – the Christian doctrine that God the Father, the Son and the Holy Spirit are three distinct persons sharing one homoousion (essence).
For the majority of Christian denominations, the Holy Spirit, or Holy Ghost, is believed to be the third divine person of the Trinity, a triune god manifested as God the Father, God the Son, and God the Holy Spirit, each being God. Nontrinitarian Christians, who reject the doctrine of the Trinity, differ significantly from mainstream Christianity in their beliefs about the Holy Spirit. In Christian theology, pneumatology is the study of the Holy Spirit. Due to Christianity's historical relationship with Judaism, theologians often identify the Holy Spirit with the concept of the Ruach Hakodesh in Jewish scripture, on the theory that Jesus was expanding upon these Jewish concepts. Similar names, and ideas, include the Ruach Elohim, Ruach YHWH, and the Ruach Hakodesh. In the New Testament the Holy Spirit is identified with the Spirit of Christ, the Spirit of Truth, and the Paraclete (helper).
The different Denominations of Christianity have variations in their teachings regarding the Holy Spirit.
The history of the filioque controversy is the historical development of theological controversies within Christianity regarding three distinctive issues: the orthodoxy of the doctrine of procession of the Holy Spirit as represented by the Filioque clause, the nature of anathemas mutually imposed by conflicted sides during the Filioque controversy, and the liceity (legitimacy) of the insertion of the Filioque phrase into the Nicene Creed. Although the debates over the orthodoxy of the doctrine of procession and the nature of related anathemas preceded the question of the admissibility of the phrase as inserted into the Creed, all of those issues became linked when the insertion received the approval of the Pope in the eleventh century.
The position of the Eastern Orthodox Church regarding the Filioque controversy is defined by their interpretation of the Bible, and the teachings of the Church Fathers, creeds and definitions of the seven Ecumenical Councils, as well as the decisions of several particular councils of the Eastern Orthodox Church.
Christian devotional literature is religious writing that Christian individuals read for their personal growth and spiritual formation. Such literature often takes the form of Christian daily devotionals. Original excerpts including the Book of Daniel and Leviticus derive from Ancient Roman, Greek and Byzantine culture – and encompass the past relationship of God's Law through the Old Testament. Though these are the most significant accounts, the majority of the literature comprises commentaries to the ever changing social and political reforms of human history – including the impact of censorship, persecution – the reign of Emperor Nero and Diocletian and martyrdom on Christian life through the ages.
The eternal generation of the Son is a Trinitarian doctrine, which is defined as a necessary and eternal act of God the Father, in which he generates God the Son through communicating the whole divine essence to the Son. Generation is not defined as an act of the will, but is by necessity of nature. To avoid anthropomorphistic understandings of the doctrine, theologians have defined it as timeless, non-bodily, incomprehensible and not as a communication without but within the Godhead. The view is affirmed by the Roman Catholic Church, Eastern Orthodoxy and Protestantism as is evident in the Westminster Confession the London Baptist Confession and by Lutheran confessions among others.
