The truth about creation is so important for all of human life that God in his tenderness wanted to reveal to his People everything that is salutary to know on the subject. Beyond the natural knowledge that every man can have of the Creator, God progressively revealed to Israel the mystery of creation. He who chose the patriarchs, who brought Israel out of Egypt, and who by choosing Israel created and formed it, this same God reveals himself as the One to whom belong all the peoples of the earth, and the whole earth itself; he is the who alone “made heaven and earth”.
Thus the revelation of creation is inseparable from the revelation and forging of the covenant of the one God with his People. Creation is revealed as the first step towards this covenant, the first and universal witness to God’s all-powerful love. and so, the truth of creation is also expressed with growing vigour in the message of the prophets, the prayer of the psalms and the liturgy, and in the wisdom sayings of the Chosen People.
Among all the Scriptural texts about creation, the first three chapters of Genesis occupy a unique place. From a literary standpoint these texts may have had diverse sources. the inspired authors have placed them at the beginning of Scripture to express in their solemn language the truths of creation – its origin and its end in God, its order and goodness, the vocation of man, and finally the drama of sin and the hope of salvation. Read in the light of Christ, within the unity of Sacred Scripture and in the living Tradition of the Church, these texts remain the principal source for catechesis on the mysteries of the “beginning”: creation, fall, and promise of salvation.
From the Catechism of the Catholic Church 287-289