 The encyclical Divino afflante Spiritu , published in 1943 , emphasized the role of the Bible . Pius XII freed biblical research from previous limitations . He encouraged Christian theologians to revisit original versions of the Bible in Greek and Hebrew . Noting improvements in archaeology , the encyclical reversed Pope Leo XIII 's encyclical , which had only advocated going back to the original texts to resolve ambiguity in the Latin Vulgate . The encyclical demands a much better understanding of ancient Jewish history and traditions . It requires bishops throughout the Church to initiate biblical studies for lay people . The Pontiff also requests a reorientation of Catholic teaching and education , relying much more on sacred scriptures in sermons and religious instruction . 
