Nicaea 325: Competing Trinitarian Theologies and the Shaping of Doctrine

This article reassesses the theological parameters at stake during the Council of Nicaea (325) by giving hermeneutical priority to contemporary documents over later historiographical accounts. It identifies three distinct Trinitarian positions at the council: Alexander’s theology of the eternal begetting, Eusebius of Caesarea’s affirmation of the atemporal priority of the Father, and various two-stage Logos theologies. It is necessary to distinguish between the original doctrines, their possible implications, and their subsequent polemical distortions. The real controversy centered on two theological models: the atemporal priority of the Father over the Son (Eusebius and Arius) and the strict coeternity of the two (Alexander and Eustathius). By affirming that the Son is homoousios with the Father, the Nicene Creed intended to exclude any notion that God could exist “prior” to the Son-since the Son’s very existence is grounded not in the divine economy but in the divine being itself.