2. Tim 3, 15-17
The sacred scriptures, which are capable of giving you wisdom for salvation through faith in Christ Jesus. All scripture is inspired by God and is useful for teaching, for refutation, for correction, and for training in righteousness, so that one who belongs to God may be competent, equipped for every good work.

« Dei Verbum »

25. Therefore, all the clergy must hold fast to the Sacred Scriptures through diligent sacred reading and careful study, especially the priests of Christ and others, such as deacons and catechists who are legitimately active in the ministry of the word. This is to be done so that none of them will become "an empty preacher of the word of God outwardly, who is not a listener to it inwardly" (St. Augustine Sermons) since they must share the abundant wealth of the divine word with the faithful committed to them, especially in the sacred liturgy. The sacred synod also earnestly and especially urges all the Christian faithful, especially Religious, to learn by frequent reading of the divine Scriptures the "excellent knowledge of Jesus Christ" (Phil. 3:8). "For ignorance of the Scriptures is ignorance of Christ."(Jerome, Commentary on Isaiah) Therefore, they should gladly put themselves in touch with the sacred text itself, whether it be through the liturgy, rich in the divine word, or through devotional reading, or through instructions suitable for the purpose and other aids which, in our time, with approval and active support of the shepherds of the Church, are commendably spread everywhere. And let them remember that prayer should accompany the reading of Sacred Scripture, so that God and man may talk together; for "we speak to Him when we pray; we hear Him when we read the divine saying." (St. Ambrose, On the Duties of Ministers)