46 Two other elements are essential in the faithful transmission of the Church’s memory. First, the Lord’s Prayer, the "Our Father". Here Christians learn to share in Christ’s own spiritual experience and to see all things through his eyes. From him who is light from light, the only-begotten Son of the Father, we come to know God and can thus kindle in others the desire to draw near to him. Similarly important is the link between faith and the Decalogue. Faith, as we have said, takes the form of a journey, a path to be followed, which begins with an encounter with the living God. It is in the light of faith, of complete entrustment to the God who saves, that the Ten Commandments take on their deepest truth, as seen in the words which introduce them: "I am the Lord your God, who brought you out of the land of Egypt" ( Ex 20:2). The Decalogue is not a set of negative commands, but concrete directions for emerging from the desert of the selfish and self-enclosed ego in order to enter into dialogue with God, to be embraced by his mercy and then to bring that mercy to others. Faith thus professes the love of God, origin and upholder of all things, and lets itself be guided by this love in order to journey towards the fullness of communion with God. The Decalogue appears as the path of gratitude, the response of love, made possible because in faith we are receptive to the experience of God’s transforming love for us. And this path receives new light from Jesus’ teaching in the Sermon on the Mount (cf. Mt 5-7). These, then, are the four elements which comprise the storehouse of memory which the Church hands down: the profession of faith, the celebration of the sacraments, the path of the ten commandments, and prayer. The Church’s catechesis has traditionally been structured around these four elements; this includes the Catechism of the Catholic Church, which is a fundamental aid for that unitary act with which the Church communicates the entire content of her faith: "all that she herself is, and all that she believes".
Source: Lumen Fidei (Vatican.va)