A series of sermons, first published in 1876. According to Wikipedia: "Dwight Lyman Moody (February 5, 1837 - December 22, 1899), also known as D.L. Moody, was an American evangelist and publisher who founded the Moody Church, Northfield School and Mount Hermon School in Massachusetts (now Northfield Mount Hermon School), the Moody Bible Institute and Moody Publishers."