Incarnation (Christianity)

===Ecumenical councils===
{{Main|Ecumenical council}}
Eventually, the teachings of Alexander, [[Athanasius of Alexandria|Athanasius]], and the other [[Nicene Fathers]] that the Son was consubstantial and coeternal with the Father, were defined as orthodox dogma. All divergent beliefs were defined as [[heresy|heresies]]. This included [[Docetism]], [[Arianism]], [[Nestorianism]], [[Monophysitism]], [[Adoptionism]], and [[Sabellianism]].<ref name="In Jesus Humanity and Divinity Unit">{{cite journal |last1=Marbaniang |first1=Domenic |title=In Jesus Humanity and Divinity United |journal=Revive |date=2011 |volume=4 |issue=5 |page=3}}</ref>

The most widely accepted definitions of the incarnation and the nature of Jesus were made by the [[First Council of Nicaea]] in 325, the [[First Council of Ephesus|Council of Ephesus]] in 431, and the [[Council of Chalcedon]] in 451. These councils declared that Jesus was both fully God (begotten from, but not created by, the Father) and fully man, taking his flesh and human nature from the [[Blessed Virgin Mary|Virgin Mary]]. These two natures, human and divine, were [[hypostatic union|hypostatically]] united into the one [[Personhood#Christianity|personhood]] of Jesus Christ.<ref group="note">[http://www.ccel.org/ccel/schaff/npnf214.toc.html The Seven Ecumenical Councils], from the ''Nicene and Post-Nicene Fathers'', vols. 2–14 (CCEL.org) Contains detailed statements from each of these councils. The First Council of Nicaea, Council of Ephesus and Council of Chalcedon are the "First", "Third" and "Fourth" Ecumenical Councils, respectively.</ref> According to the [[Catholic Church]], an ecumenical council's declarations are [[infallible]], making the incarnation a [[dogma in the Catholic Church]].<ref>{{Cite web|url=https://www.vatican.va/archive/ccc_css/archive/catechism/p1s1c2a2.htm|title=Catechism of the Catholic Church 85–90|accessdate=December 22, 2021}}</ref>