Abstract
Early Christian authors were challenged by the impenetrable question of the origin of the world, but persevered in tracing the creation of the universe back to the one and only God. Part of their response was to defend the truth of God, the Father and Creator by meditating and commenting on the biblical account of the six days of creation. The commentaries on the Hexameron which we have are by Theophilus of Antioch and Clement of Alexandria. Theophilus, author of the oldest commentary on Genesis 1:1-25, pursues a primarily apologetic aim in favour of Christian monotheism and of faith in God who, through his Logos, is the Creator of all things; Clement, through statements scattered throughout his works, confirms in opposition to Gnostic-Marcionite ditheism that God the Father, working through the Logos, created the universe according to a plan of salvation whose fulfillment will be redemption at the end of time. Exegesis is combined with theology and – on the basis of a philosophical substratum which also includes predominantly Judaic traditions – translates into principles which will later open the way to protological reflection.