Resumen:
This thesis is a study on adoption as sons and daughters of God, and divinization. It is divided into four chapters. In the first one, the way in which God the Father and his Eternal Son relate to each other is exposed, both from the perspective of being different people, and from the perspective of their differential being hidden. The second chapter focuses on the creation of human beings, vivified by the very personal divine breath, made in the image of God, generated for filiation. In the third chapter we find, especially from the Pauline pen and, in particular, from his Epistle to Philemon, the concreteness of adoption as sons and daughters of God, or Huiothesía. In the fourth and last chapter we analyze the climax of filiation, namely: saved people, made daughters and sons of God through faith in the Only Begotten [Son], being, at the end of this age, divinized, made partakers of the glory of the Eternal Son, something which the Orthodox tradition calls Theosis.
