Holy men and women down through the centuries even to the present day have left us a rich collection of aids for the spiritual life in the form of varied devotions, prayers, and guides for spiritual union with God.  The Way of Divine Love details a series of revelations to Sister Josefa Menendez in which Our Lord entreated her and us for reparation for the sins committed by unfaithful priests and religious. The Imitation of Christ  by Thomas a Kempis is perhaps the best known of all devotionals. The Divine Mercy Message and Devotion was delivered to St. Faustina. The Catholic book of Prayers and a Treasury of Novenas are compilations of many popular devotions