It is to be ascribed to this divine revelation, that such truths among things divine as of themselves are not beyond human reason, can, even in the present condition of mankind, be known by every one with facility, with firm assurance, and with no admixture of error. This, however, is not the reason why revelation is to be called absolutely necessary; but because God of His infinite goodness has ordained man to a supernatural end, viz., to be a sharer of divine blessings which utterly exceed the intelligence of the human mind: for 'eye hath not seen, nor ear heard, neither hath it entered into the heart of man, what things God hath prepared for them that love Him' (1 Cor. ii. 9).
Further, this supernatural revelation, according to the universal belief of the Church, declared by the Sacred Synod of Trent, is contained in the written, books and unwritten traditions which have come down to us, having been received by the Apostles from the mouth of Christ himself, or from the Apostles themselves, by the dictation of the Holy Spirit, have been transmitted, as it were, from hand to hand.[1] And these books of the Old and New Testament are to be received as sacred and canonical, in their integrity, with all their parts, as they are enumerated in the decree of the said Council, and are contained in the ancient Latin edition of the Vulgate. These the Church holds to be sacred and canonical, not because, having been carefully composed by mere human industry, they were afterwards approved by her authority, nor merely because they contain revelation, with no admixture of error, but because, having been written by the inspiration of the Holy Ghost they have God for their author, and have been delivered as such to the Church herself.
And as the things which the Holy Synod of Trent decreed for the good of souls concerning the interpretation of Divine Scripture, in order to curb rebellious spirits, have been wrongly explained by some, We, renewing the said decree, declare this to be their sense, that, in matters of faith and morals, appertaining to the building up of Christian doctrine, that is to be held as the true sense of Holy Scripture which our Holy Mother Church hath held and holds, to whom it belongs to judge of the true sense and interpretation of the Holy Scripture; and therefore that it is permitted to no one to interpret the Sacred Scripture contrary to this sense, nor, likewise, contrary to the unanimous consent of the Fathers.
