48 Secondly, it is from the Bible that we gather confirmations and illustrations of any particular doctrine we wish to defend. In this Jerome was marvelously expert. When disputing with the heretics of his day he refuted them by singularly apt and weighty arguments drawn from the Bible. If men of the present age would but imitate him in this we should see realized what our predecessor, Leo XIII, in his Encyclical, Providentissimus Deus , said was so eminently desirable: "The Bible influencing our theological teaching and indeed becoming its very soul."
Source: Spiritus Paraclitus (Vatican.va)