Marius Victorinus' surviving Christian writings consist of three hymns and nine treatises on the Trinity aswell as commentaries on Pauline epistles, the first in Latin. With the tools of grammar and rhetoric, Victorinus expounds the context of each epistle, clarifying the apostle's theoretical and practical precepts. Victorinus' philosophical learning came to fruition in his Trinitarian works, rich soil for Quellenforschungen. Victorinus' chief contribution is his philosophical conception of God, aptly dubbed 'the first metaphysical theory of a self-reflexive Absolute in the context of Latin theology'. Despite being a marginal character in the history of theology and a minor luminary in the history of philosophy, Marius Victorinus is an exemplar of the pervasive confluence of Greek philosophy and Christianity in late antiquity. He has rightly been recognized as the origin of a remarkable synthesis of Christianity and Platonism in the Latin world; and in this regard Victorinus was a forerunner of the medieval philosophical systems of the Christian West.