The communion of mankind with God is made possible by the Son of God’s assumption of humanity, in the humanity therefore of Jesus Christ. It is He who is the mediator, the mystery of God in the midst of the world. Mankind does not enjoy a different or immediate access to divine fullness and to its own complete fulfillment .

The Christian conscience originates in the acceptance of this "sacrament" and in the manifestation and realization in the present of the divine redeeming plan in Jesus Christ; consequently, it originates according to historical forms chosen by God for communicating Himself in a definite manner to mankind.

At the very center of the economy of Redemption are the person and the work of Jesus of Nazareth, the Son of God made man according to the will of the Father and through the work of the Holy Ghost, and whose gift of Himself to mankind began with the Incarnation and continued throughout His historical passage in the midst of the people of Israel reaching a fullness, anticipated during the Last Supper, in the Cross and the glorious resurrection and the gift of the Spirit by He who resurrected.

In fact it will be the Holy Spirit Himself who will lead the disciples to the understanding of the entire truth revealed by Jesus Christ, which is not simply a more or less complicated doctrine or the bearer of novelties, it is in effect the reality that is totally present in the love of the Father and of the Son, made tangible through the humanity of Jesus Christ. The Spirit will gratuitously allow the participation in this loving relationship, experienced in a human manner by the Son on earth and offered to mankind as the Gift of the merciful and redeeming presence of God.

In fact, after Pentecost, the Apostles did not simply propose to mankind new interpretations regarding existence, but they announced the Redemption enacted by God in Jesus of Nazareth and introduced mankind to the reality they announced: in the knowledge and the communion with Christ, in life as adopted children united to the First Born, as new creatures regenerated by an incorruptible seed. In a word, they announced the Gospels so that mankind might live in communion with they themselves who are "in communion with The Father and with His Son Jesus Christ".

The acceptance filled with faith of the Word of God will therefore imply the acceptance of His Incarnate presence, the communication of Himself that Jesus freely offers in the gift of His Flesh and His Blood, in His original "washing of the feet" during the Last Supper. Christian faith and conscience furthermore do not reach their fullness without the essential communion with the Body of Christ; meaning, without baptism in the name of the Lord, without communion with the Eucharist, without life in the visible unity generated by Christ and at whose service He sent the Apostles as ministers.

In this way, the divine redeeming plan insures the contemporaneity of Christ with mankind in each and every era, which is fulfilled in the living body of the Church that, in virtue of the Holy Ghost, lives in communion with the risen Lord and in this manner can exist "as a sacrament", the sign and the instrument of the union of mankind with Jesus Christ.

Consequently, ever since the origins of the Christian tradition, believers are fully aware that they have not only been introduced to the knowledge of a human message concerning God, but to a reality that is of a sacramental nature, in which the human and the divine are united, not only in communion with Christ but also in Him, to a new and deeper unity with God and with all mankind.