It is in Jesus Christ, the freely given revelation of the trinitarian God, that the enigma of existence is revealed and the complete fulfillment of human destiny is accomplished; at the same time the development of a new moral life becomes possible, corresponding to the very dynamics of the heart, a life that searches for the fullness of good and of happiness, that searches for God himself.

In the light of the revelation the believer discovers the unity of the eternal plan, wise and filled with love, (lex aeterna) with which God preordains mankind to reproduce the image of His Son.

Moral life then appears immersed in the gratitude of the love of God, as an answer to the divine initiative that ever since the Creation prescribes a glorious destiny for mankind, providing him with freedom and the light of intelligence, so that mankind shall know what to do and what to avoid (natural law). The path followed by the Revelation will then represent the progressive revelation of love as the nucleus of this law of the human heart; all the commandments, as well as the beatitudes and the very sending of Jesus, will serve the only and indivisible charity that the heart of mankind is called to and whose measure is God himself.

Faced with the greatness and the profundity of this dialogue of love, mankind recognizes his sins, and also understands that he is unable to accomplish the Law of perfect love for God and for all men simply with his own strength.

In reality, the definite manifestation in history of the trinitarian God will place a mystery of compassion and redemption at the basis of life and of Christian morals.

Indeed, in the fullness of time, the Son of God becomes flesh so as to become, through the full gift of Himself to the point of the Crucifixion, the perfect realization of mankind, the living accomplishment of the Law. In Christ mankind does not only recognize God the Father, the Son and the Spirit as its real origin and destiny, but also finds the path, the truth and life. Hence each person is called upon to join the movement of the total donation of Jesus Christ, reliving His love, becoming analogous to Him thanks to the grace of the Spirit, so that it will be possible to proceed, albeit within the fragility of the human condition, with the freedom of the children of God.

Since love and life according to the Gospels, the moral path that leads to communion with the trinitarian God is greater than mankind’s strength and cannot be presented simply as an external doctrine or a pure precept, it is only possible as the result of a Gift from God, that heals, cures and transforms the heart of man through its Grace.

Therefore the path and the contents of moral perfection consist in the sequela Christi, in the adhesion to the very person of Jesus, sharing His life and His destiny, participating in His Spirit of free and loving obedience to the Father. Historically, this insertion in Christ takes place through the Sacrament of Baptism, though which the Spirit makes man a member of the Body of Christ, and which culminates in the participation in the Eucharist.

The life of communion of the Church is therefore the very environment of a Christian’s moral actions, a Christian who following Jesus Christ allows himself to be transformed by His grace and to be renewed by His mercy, until he becomes "a perfect man, unto the measure of the age of the fullness of Christ".