The purpose of these lines is to try to clarify the origins of the theological positions that Zubiri took on the mature stage of his work. For this reason, we will refer mainly to two of his writings: “Hellenism and Christianism” and “The Supernatural Being: God and the deification in Pauline Theology”. They both provide and account of Zubiri’s first steps in the field of Theology, and are valuable for the understanding of his definite theological thought, in relation to the key concepts of his metaphysics.