The moral life is a spiritual worship. Christian activity finds its nourishment in the liturgy and the celebration of the sacraments.
The precepts of the Church concern the moral and Christian life united with the liturgy and nourished by it.
The Magisterium of the Pastors of the Church in moral matters is ordinarily exercised in catechesis and preaching, on the basis of the Decalogue which states the principles of moral life valid for every man.