1 Since the Holy Spirit, the Comforter, had bestowed the Scriptures on the human race for their instruction in Divine things, He also raised up in successive ages saintly and learned men whose task it should be to develop that treasure and so provide for the faithful plenteous "consolation from the Scriptures." Foremost among these teachers stands St. Jerome. Him the Catholic Church acclaims and reveres as her "Greatest Doctor," divinely given her for the understanding of the Bible. And now that the fifteenth centenary of his death is approaching we would not willingly let pass so favorable an opportunity of addressing you on the debt we owe him. For the responsibility of our Apostolic office impels us to set before you his wonderful example and so promote the study of Holy Scripture in accordance with the teaching of our predecessors, Leo XIII and Pius X, which we desire to apply more precisely still to the present needs of the Church. For St. Jerome - "strenuous Catholic, learned in the Scriptures," "teacher of Catholics," "model of virtue, world's teacher" - has by his earnest and illuminative defense of Catholic doctrine on Holy Scripture left us most precious instructions. These we propose to set before you and so promote among the children of the Church, and especially among the clergy, assiduous and reverent study of the Bible.
Source: Spiritus Paraclitus (Vatican.va)