As the Psalms of David form the principal part of the authorized prayers of the Church, it is most desirable that all the faithful should know their literal and mystic meaning. The Clergy and Religious, who are bound to recite the Divine Office, must daily read many of the Psalms. If, in addition to the meaning of the words, they know the historic sense of the Psalm, and its spiritual application to Christ and to his kingdom, they will, according to the counsel of St. Paul, pray with the spirit, and they will also pray with the understanding. (1 Cor. 15:15)The Commentary of the venerable Cardinal Bellarmine, saint and doctor of the Church, is remarkable for clearness of exposition, and for suggesting the spiritual meanings best calculated to awaken and cherish devotion.