In Lord, Have Mercy, Scott Hahn explores the sacrament of reconciliation and shows why it is the key to spiritual growth, particularly in these times of intense anxiety and uncertainty.Drawing on the history of ancient Israel, the Gospels, the writings of the early Church, and the lives of the saints, Hahn reveals the living, scriptural heart of the Church's teachings on penance, forgiveness, and reconciliation. It is a story that begins with the sin of Adam and Eve, continues in the biographies of Moses, King David, and the Apostle Peter, and reverberates in the lives of believers today. Hahn presents the Catholic and biblical perspective on sin and mercy, elucidating in clear, easily understood language the true import of Jesus' simple, yet profound promise - "I am the door; if anyone enters by Me, he will be saved" (John 10:9).