Theology & Dogma

The Holy Trinity

The central dogma of Orthodox Christianity: One God in Three Persons, Father, Son, and Holy Spirit. Co-eternal, co-equal, consubstantial (homoousios). The Father is the sole Cause (aitia) and Source (pege) of the Godhead.

Sources

Nicene-Constantinopolitan Creed (381 AD) OCA
St. Gregory the Theologian, Orations 27-31 the Theological Orations
St. John of Damascus, Exact Exposition of the Orthodox Faith, Book I NPNF

Connections

First Ecumenical Council: Nicaea I (325)
Homoousios (Consubstantial)
Hypostasis (Person)
Nicene-Constantinopolitan Creed
Ousia (Essence/Nature)
Pneumatology (Holy Spirit)
Rublev's Trinity Icon
Second Ecumenical Council: Constantinople I (381)
Theophany (Epiphany): January 6

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