An enthralling insight into how Christ uses Saint Faustina to reveal the divine mysteries of His merciful love for mankind. His purpose, as recounted in the book, is to enable the saint to glorify God through her life and co-operate with God's plan of redemption. Permitted to gain a vision of heaven, she notes in her diary: "O my God, how I pity those who do not believe in eternal life; how I pray for them that a ray of mercy would envelope them too, and that God would clasp them to his fatherly bosom." On prayer and sacrifice, Christ instructs us through Saint Faustina as follows: "You will...