Augustin s commentaries on the Holy Scriptures are important to show the richness of initiatives which made a genuine contribution from the Western Church towards the Patristic Theology. In the context of Christological debates, we are able to see results that constrain the field of interpretation of the sacred texts, forging the orthodox way to say, so that the speeches could fit the regula fidei which the councils had established. In the Augustinian commentaries, the fi rst verse of John s Gospel became a model of how to overcome material diffi culties in reading the text. In addition, Augustin gives us hermeneutic clues through which we reach Christological conclusions so engaging in a constructive dialogue with Ecclesiology and Eschatology, that they may inspire us to look for original explanations that are wider than those provided by the former apologetic context, where Gnosticism, Judaism and the Arianism represented the biggest challenge to the interpretation of the verse. For that reason, Augustin exhorts the Christian to follow the path of spiritual growing hidden in those words that the Evangelist used to open his work.