The development of the Christian doctrine of God and the Trinity marks a pivotal transformation in theological thought, not only within the Christian tradition but in the broader intellectual landscape of Late Antiquity. Christianity's conception of God as a triune being—the Father, the Son, and the Holy Spirit—was not simply a matter of religious belief, but an intellectual endeavor that engaged with and often responded to the prevailing philosophical systems of the time, especially those of Greek and Roman origin. One of the most significant of these philosophical systems was Neoplatonism, a development of Platonic thought which would leave a profound imprint on the shaping of Christian theological concepts.