The oldest known icon of Christ Pantocrator - Saint Catherine's Monastery. The two different facial expressions on either side emphasize Christ's dual nature as both divine and human.^[1][2]

Hypostatic union (from the Greek: ὑπόστασις hypóstasis, sediment, foundation, substance, or subsistence) is a technical term in Christian theology employed in mainstream Christology to describe the union of Christ's humanity and divinity in one hypostasis.^[3]

The First Council of Ephesus recognised this doctrine and affirmed its importance, stating that the humanity and divinity of Christ are made one according to nature and hypostasis in the Logos.

[edit] The use of hypostasis

Hypostasis had come into use as a technical term prior to the Christological debates of the late fourth and fifth centuries. Before there were Christians, the word was used in Greek philosophy, primarily in Stoicism.^[4][5] Hypostasis had some use in the New Testament that reflect the later, technical understanding of the word; especially Hebrews 1:3. Although it can be rendered literally as "substance" this has been a cause of some confusion^[6] so it is now often translated "subsistence". It denotes an actual, concrete existence, in contrast with abstract categories such as Platonic ideals.

The First Council of Nicaea declared that the Father and the Son are of the same substance and are co-eternal. This belief was expressed in the Nicene Creed.

Through history[link]

Apollinaris of Laodicea was the first to use the term hypostasis in trying to understand the Incarnation.^[7] Apollinaris described the union of the divine and human in Christ as being of a single nature and having a single essence - a single hypostasis.

The Nestorian Theodore of Mopsuestia went in the other direction, arguing that in Christ there were two natures (dyophysite) (human and divine) and two hypostases (in the sense of "essence" or "person") that co-existed.^[8]

The Chalcedonian Creed agreed with Theodore that there were two natures in the Incarnation. However, the Council of Chalcedon also insisted that hypostasis be used as it was in the Trinitarian definition: to indicate the person and not the nature as with Apollinarius.

Thus, the Council declared that in Christ there are two natures; each retaining its own properties, and together united in one subsistence and in one single person (εἰς ἓν πρόσωπον καὶ μίαν ὑπόστασιν, eis hèn prósōpon kaì mían hypóstasin).^[9]

As the precise nature of this union is held to defy finite human comprehension, the hypostatic union is also referred to by the alternative term "mystical union."

The Oriental Orthodox Churches, having rejected the Chalcedonian Creed, were known as Monophysites because they would only accept a definition that characterized the incarnate Son as having one nature. The Chalcedonian "in two natures" formula (based, at least partially, on Colossians 2:9) was seen as derived from and akin to a Nestorian Christology.^[10] Contrariwise, the Chalcedonians saw the Oriental Orthodox as tending towards Eutychian Monophysitism. However, the Oriental Orthodox have in modern ecumenical dialogue specified that they have never believed in the doctrines of Eutyches, that they have always affirmed that Christ's humanity is consubstantial with our own, and they thus prefer the term Miaphysite to refer to themselves, a reference to Cyrillian Christology, which used the phrase "μία φύσις τοῦ θεοῦ λόγου σεσαρκωμένη", "mía phýsis toû theoû lógou sesarkōménē".

In recent times, leaders from the Eastern Orthodox and Oriental Orthodox Churches have signed joint statements in an attempt to work towards reunification.

See also[link]

Look up hypostasis in Wiktionary, the free dictionary.

Christianity portal

• God-man (mystic)
• Person of Christ

References[link]

 This article incorporates text from a publication now in the public domain: Herbermann, Charles, ed. (1913). Catholic Encyclopedia. Robert Appleton Company. 

v t e Christian theology Outline of Christian theology Systematic Scripture Inspiration · Canonics · Biblical studies · Exegesis · Law and Gospel · Hermeneutics Of God Attributes · Christology · Pneumatology · Trinity · Father · Son (Hypostatic union · Incarnation · Jesus · Logos · Christocentric) · Holy Spirit · Theocentricism · Immutability · Impassibility Cosmology Creation · Angels · Angelic hierarchy · Humanity · Fallen angels · Satan · Theodicy Soteriology Absolution · Adoption · Assurance · Atonement · Baptism · Conversion · Eternal life · Faith · Forgiveness · Glorification · Grace · Irresistible grace · Imputation · Justification · Lapsarianism · Means of grace · Mortification · Ordo Salutis · Predestination · Reconciliation · Redemption · Regeneration · Repentance · Resurrection · Salvation · Sanctification · Theosis · Union with Christ Hamartiology Adam · Anthropology · The Fall · Incurvatus in se · Original sin · Sin · Theodicy · Total depravity Ecclesiology Sacrament · Missiology · Polity (Congregational · Episcopal · Presbyterian) · Synod · Conciliarity Eschatology Summary of differences · Historicism · Idealism · Dispensationalism · Futurism · Preterism · Millenarianism (Pre-/ Post-/ A-) · Adventism · Antichrist · Apocalypse · Apocalypticism · Covenant/New Covenant theology · End times · Heaven · Hell · Last Judgment · Millennialism · New Jerusalem · Rapture · Second Coming · Soul sleep · Tribulation · War in Heaven Historical History of Christian theology · Calvinist–Arminian debate · Apostolic Age · Canon · Patristics · Caesaropapism · Semipelagianism · Iconoclasm · Scholasticism · Thomism · Conciliarism · Renaissance · Protestant Reformation · Counter-Reformation · Pietism · Great Awakenings Practical Apologetics · Biblical law · Education · Ethics · Homiletics · Liturgics · Missiology · Moral · Pastoral · Polemics · Political By Tradition Eastern Orthodox theology Apophatic theology · Cataphatic theology · Economy · Essence–Energies · Filioque · Gnomic will · Metousiosis · Phronema · Phyletism · Proskynesis · Sobornost · Symphonia · Tabor light · Theoria · Theosis · Theotokos Roman Catholic theology Absolution · Apostolic succession · Assumption of Mary · Traditionalism · Ecumenical Councils · Icon veneration · Immaculate conception · Indulgences · Infant baptism · Josephology · Liturgy · Mariology · Mass · Modernism · Natural Law · Papal infallibility · Priesthood · Purgatory · Quartodecimanism · Real presence · Sacerdotalism · Sacrament · Sainthood · Thomism · Transubstantiation · Ultramontanism Protestant theology Widely held Protestant theology Adiaphora · Assurance · Believer's baptism · Priesthood of the believer Anglican Anglo-Catholicism · Evangelical Catholic · High church · Latitudinarian · Low church Arminian / Wesleyan Christian perfection · Conditional preservation of the saints · Imparted righteousness · Lordship salvation · Prevenient grace Lutheran Two kingdoms · Loci Theologici · Theology of the Cross · Confessional Lutheran · Haugean · Lutheran Orthodoxy · Lutheran scholasticism · Neo-Lutheranism Reformed Christian Reconstructionism · Covenantalism · Free Grace theology · Monergism · Predestination · Five solas (Sola fide · Sola gratia · Sola scriptura · Soli Deo gloria · Solus Christus) · Supersessionism · Total depravity · TULIP Pentecostalism Baptism with the Holy Spirit · Faith healing · Fivefold ministry · Glossolalia Other Traditions Adventistism · Anabaptism · Dispensationalism · Evangelicalism · Fundamentalism · Messianic Judaism · Pietism · Prosperity theology · Restorationism Christianity Portal