I believe that were it not for holy Mass, at this moment the world would be in the abyss, unable to bear up under the mighty load of its iniquities. Mass is the potent prop that holds the world upon its base. Therefore, when we are assisting at it, we ought to practice that which once Alphonsus of Albuquerque did, who, finding himself with has fleet in danger of perishing during a fierce and terrific tempest, adopted the following means: He took in his arms an innocent little child which was on board his ship, and lifting it up toward heaven, he said, "If we are sinners, this creature is certainly free from sin; O Lord, for love of this innocent, remit to us the death we deserve!" This book describes the great spiritual power of the Mass, how it holds back the wrath of God, its wonderful eternal and temporal benefits and several excellent ways to pray at Mass. Hidden Treasure is the prototype book on the Mass for all other books on the same subject; others basically repeat what this small book contains.