A moving account of the prevalence of prayer experienced in the life of the author. William Huntington (1745-1813) relates his conversion and call to the ministry in this well-known work. Huntington closely and faithfully discriminated between taking the mere lamp of profession in the hand and the vital necessity, upon which he insisted, of possessing the oil of God's grace in the heart if ever we are to enter heaven. William Romaine, who was his contemporary, observed: 'God raises up such men as John Bunyan and William Huntington but once in a century.'