Light is that unifying factor, not only of the fields of being and their relativities within creation, but of the totality of all creation in its essential relation to the Creator who brought it into being and sustains it. That God is created Life and Light, utterly beyond and surpassing our comprehension, yet the Source of all light both enlightening and enlivening, is declared and fulfilled in the incarnation, the foundation and controlling tenet of that which claims to be the discipline of theology. This work examines light as a significant concept in the themes of creation, incarnation, and the relation of God to his handiwork.