Interpretation of the Heritage of Faith

The "Sacred deposit" was untrusted to the whole of the Church by the apostles. Through this heritage in which pastors remain faithful to the teachings of the apostles through breaking of the bread and prayers, they maintain, practice, and profess the faith in harmony.

Authentic interpretation of the Word of God (written form or in form of Tradition) has been entrusted to the living and the Church, authority exercised in the name of Jesus Christ. This interpretation has been entrusted to bishops in communion with the Bishop of Rome. Yet, the Magisterium is not superior to the Word of God but is only a servant of teaching only what has been handed. With the help of the Holy Spirit, it is expounded faithfully. "Mindful of Christ's words to his apostles, "He who hears you, hears me, the faithful receive with docility the teachings and directives that their pastors give them in different forms."

The Church Magisterium holds the authority from Christ to the fullest extent when it defines dogmas, when it proposes and teaching Christian people to an "irrevocable adherence of faith, truths contained in the divine Revelation or also when it proposes, in a definite way, truths having a necessary connection with these."
There is a connection between our spiritual life and the dogmas, which are "lights along the path of faith; they illuminate it and make it secure." If our life is upright, our intellect, and our hearts we will be open to welcome the light shed by the dogmas of faith."
Connections between dogmas are only found in the Revelation of the mystery of Christ. "In Catholic doctrine there exists an order or 'hierarchy' of truths, since they vary in their relation to the foundation of the Christian faith."

The Holy Spirit instructs and guides the faithful to the truth. The appreciation of the faith is aroused and sustained by the Spirit of the truth. The people of God guided by the Magisterium receive the faith to deliver. The people unfailingly adhere and penetrate the faith deeply with right judgment to apply to the daily life.

Growth and understanding the faith is a process that comes from the Holy Spirit. Realities of life and word of the scripture and of the heritage of the faith, grows in the life of the Church through:
-".. contemplation and study of believers who ponder these things in their hearts... deepens knowledge of revealed truth."
-"from the intimate sense of spiritual realities which is experienced.."
-"from the preaching of those who have received along with their right of succession in the episcopate, the sure charism of truth."

The sacred Tradition, Sacred Scripture, and the Magisterium of the Church are connected and are not able to stand alone. Working together, through the Holy Spirit they contribute to the salvation of the souls.

Comment: Through the supernatural power of faith is a precious gift given to the People of God that are able to penetrate deeply and live out the divine Revelation. Interpreting the Word of God has been entrusted solely to the Magisterium of the Church (the Pope and the bishops, which are in deep constant communion with God). 

Source: 

Catechism of the Catholic Church.

Catechism of the Catholic Church. New York: Doubleday, 1995. Print. 

Part One: The Profession of Faith
Section One: "I Believe" - "We Believe"
Chapter Two: God Comes to Meet Man
Article 2: The Transmission of Divine Revelation
II. The Interpretation of the Heritage of the Faith (32-34)