Divine Mercy, Message and Devotion. This most popular booklet has introduced hundreds of thousands of souls to the life-changing message of mercy. It covers every aspect of the message and devotion - from the Feast and the Hour of Great Mercy to the Chaplet and the Novena. It also includes selected prayers from the Diary of St. Faustina. Here is your pocket-sized handbook on Divine Mercy to read yourself and share with family and friends. Paperback, 88 pages.