Roman Catholic 'Dogmatic Constitution on Divine Revelation'

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It is not from sacred Scripture alone that the Church draws her certainty about everything which has been revealed. There both sacred tradition and sacred Scripture are to be accepted and venerated with the same sense of devotion and reverence. Sacred tradition and sacred Scripture form one sacred deposit of the word of God, which is committed to the Church... The task of authentically interpreting the Word of God, whether written or handed on, has been entrusted exclusively to the living teaching office of the Church, whose authority is exercised in the name of Jesus Christ... It is clear, therefore, that sacred tradition, sacred Scripture, and the teaching authority of the Church, in accord with God's most wise design, are so linked and joined together that one cannot stand without the others, and that all together each in its own way under the action of the Holy Spirit contributes effectively to the salvation of the souls.
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