1 Inspired by the Divine Spirit, the Sacred Writers composed those books, which God, in His paternal charity towards the human race, deigned to bestow on them in order "to teach, to reprove, to correct, to instruct in justice: that the man of God may be perfect, furnished to every good work." This heaven-sent treasure Holy Church considers as the most precious source of doctrine on faith and morals. No wonder herefore that, as she received it intact from the hands of the Apostles, so she kept it with all care, defended it from every false and perverse interpretation and used it diligently as an instrument for securing the eternal salvation of souls, as almost countless documents in every age strikingly bear witness. In more recent times, however, since the divine origin and the correct interpretation of the Sacred Writings have been very specially called in question, the Church has with even greater zeal and care undertaken their defense and protection. The sacred Council of Trent ordained by solemn decree that "the entire books with all their parts, as they have been wont to be read in the Catholic Church and are contained in the old vulgate Latin edition, are to be held sacred and canonical." In our own time the Vatican Council, with the object of condemning false doctrines regarding inspiration, declared that these same books were to be regarded by the Church as sacred and canonical "not because, having been composed by human industry, they were afterwards approved by her authority, nor merely because they contain revelation without error, but because, having been written under the inspiration of the Holy Spirit, they have God for their author, and as such were handed down to the Church herself." When, subsequently, some Catholic writers, in spite of this solemn definition of Catholic doctrine, by which such divine authority is claimed for the "entire books with all their parts" as to secure freedom from any error whatsoever, ventured to restrict the truth of Sacred Scripture solely to matters of faith and morals, and to regard other matters, whether in the domain of physical science or history, as "obiter dicta" and - as they contended - in no wise connected with faith, Our Predecessor of immortal memory, Leo XIII in the Encyclical Letter Providentissimus Deus , published on November 18 in the year 1893, justly and rightly condemned these errors and safe-guarded the studies of the Divine Books by most wise precepts and rules.
Source: Divino Afflante Spiritu (Vatican.va)