Today's reading from the Catechism of the Catholic Church:
Article XIX:Part1:The Profession of Faith (26 - 1065)Section1:"I Believe" — "We Believe" (26 - 184)Chapter2:God Comes to Meet Man (50 - 141)Article2:The Transmission of Divine Revelation (74 - 100)III. THE INTERPRETATION OF THE HERITAGE OF FAITHThe dogmas of the faith88 The Church's Magisterium exercises the authority it holds from Christ to the fullest extent when it defines dogmas, that is, when it proposes, in a form obliging the Christian people to an irrevocable adherence of faith, truths contained in divine Revelation or also when it proposes, in a definitive way, truths having a necessary connection with these.
89 There is an organic connection between our spiritual life and the dogmas. Dogmas are lights along the path of faith; they illuminate it and make it secure. Conversely, if our life is upright, our intellect and heart will be open to welcome the light shed by the dogmas of faith.
90 The mutual connections between dogmas, and their coherence, can be found in the whole of 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 supernatural sense of faith91 All the faithful share in understanding and handing on revealed truth. They have received the anointing of the Holy Spirit, who instructs them and guides them into all truth.
92 "The whole body of the faithful... cannot err in matters of belief. This characteristic is shown in the supernatural appreciation of faith (sensus fidei) on the part of the whole people, when, from the bishops to the last of the faithful, they manifest a universal consent in matters of faith and morals."
93 "By this appreciation of the faith, aroused and sustained by the Spirit of truth, the People of God, guided by the sacred teaching authority (Magisterium),... receives... the faith, once for all delivered to the saints... The People unfailingly adheres to this faith, penetrates it more deeply with right judgment, and applies it more fully in daily life."Growth in understanding the faith94 Thanks to the assistance of the Holy Spirit, the understanding of both the realities and the words of the heritage of faith is able to grow in the life of the Church:
95 "It is clear therefore that, in the supremely wise arrangement of God, sacred Tradition, Sacred Scripture and the Magisterium of the Church are so connected and associated that one of them cannot stand without the others. Working together, each in its own way, under the action of the one Holy Spirit, they all contribute effectively to the salvation of souls."
- "through the contemplation and study of believers who ponder these things in their hearts"; it is in particular "theological research [which] deepens knowledge of revealed truth".
- "from the intimate sense of spiritual realities which [believers] experience", the sacred Scriptures "grow with the one who reads them."
- "from the preaching of those who have received, along with their right of succession in the episcopate, the sure charism of truth".
Of the Church
The visible Church of Christ is a congregation of faithful men, in the which the pure word of God is preached and the sacraments be duly ministered according to Christ's ordinance in all those things that of necessity are requisite to the same. As the Church of Jerusalem, Alexandria, and Antioch have erred: so also the Church of Rome hath erred, not only in their living and manner of ceremonies, but also in matters of faith.
Ecclesia Christi visibilis est coetus fidelium, in quo verbum Dei purum praedicatur et sacramenta, quoad ea quae necessario exiguntur, iuxta Christi institutum recte administrantur. Sicut erravit Ecclesia Hierosolymitana, Alexandrina, et Antiochena: ita et erravit Ecclesia Romana, non solum quoad agenda et caeremoniarum ritus, verum in his etiam quae credenda sunt.
(Well, it's another example of why we need our own good, deep Catechism - why we need to explain ourselves in a different way.)