First published in 1918, He That Is Spiritual by Lewis Sperry Chafer remains one of the clearest and most practical studies ever written on the believer’s walk with God. In this enduring classic, Chafer—founder of Dallas Theological Seminary and author of the eight-volume Systematic Theology —guides readers beyond mere religious effort into the dynamic reality of life controlled by the Holy Spirit. With warmth, clarity, and precision, Chafer explains the difference between the natural, carnal, and spiritual man; the indwelling and filling of the Holy Spirit; and the victory that comes when Christ lives His life through the believer. He reminds us that true spirituality is not achieved by rules, reform, or emotion—but by yielded dependence upon the indwelling Spirit of God. Whether you are a new believer seeking practical understanding or a mature Christian desiring deeper fellowship with God, Exploring the Spiritual Life with Lewis Sperry Chafer offers a timeless call to experience the fullness of life in the Spirit—a life of liberty, power, and abiding peace in Christ. This edition combines the original text of He that is Spiritual with excerpts from Major Bible Doctrines by the same author.