The Catechism points out that God reveals things to us through his creation: “The universe, created in and by the eternal Word… is destined for and addressed to man… [who is] called to a personal relationship with God” (299). Now, “the revelation of creation is inseparable from the revelation and forging of the covenant of the one God with his People” (288) as described in the Old Testament. So, as YOUCAT says: “From creation on, through the patriarchs and the prophets down to the definitive revelation in his Son Jesus Christ, God has spoken again and again to mankind. In him he has poured out his heart to us and made his inmost being visible for us” (7).
All the patterns and purposes of reality, “visible and invisible”, are brought together under Christ as Head (Ephesians 1). The Catechism sums up this “Plan of the Father”, quoting the beginning of John’s Gospel:
“In the beginning was the Word… and the Word was God. … All things were made through him, and without him was not anything made that was made.” The New Testament reveals that God created everything by the eternal Word, his beloved Son. In him “all things were created, in heaven and on earth. … All things were created through him and for him. He is before all things, and in him all things hold together.” (Colossians 1:16-17). The Church’s faith likewise confesses the creative action of the Holy Spirit, the “giver of life”, “the Creator Spirit” (Veni, Creator Spiritus), the “source of every good” (Nicene Creed) (291).