Lewis Sperry Chafer was a prominent American theologian and Christian writer. Chafer was the first president of the Dallas Theological Seminary and he contributed significantly to Christian Dispensationalism in the early 20th century. Chafer is best remembered today for his books, including the Christian classic He That is Spiritual. This is an excellent book in which Chafer explains all of the aspects of salvation as he explores topics such as atonement, forgiveness, and sanctification.