Most of the section that includes Chapters 26 thru 50 is taken up on doctrines essential to the Christian faith. This includes practical applications of the Word of God in the believers life. This also includes a defense of the person and work of the Lord Jesus Christ.

 
Chapter 26 Life in the Word

By Philip Mauro Attorney at Law, New York City.

Chapter 27 Is There a God?

By Rev. Thomas Whitelaw, M.A., D.D., Killmarnock, Scotland.

Chapter 28 God in Christ the Only Revelation of the Fatherhood of God

By Robert E. Speer, Secretary of The Board of Foreign Missions of the Presbyterian Church, U.S.A., New York City.

Chapter 29 The Deity of Christ

By Professor Benjamin B. Warfield, D. D., LL.D., Princeton Theological Seminary, Princeton, New Jersey.

Chapter 30 The Virgin Birth of Christ

By Rev. Professor James Orr, D. D., United Free Church College, Glasgow, Scotland.

Chapter 31 The God-Man

By the Late John Stock.

Chapter 32 The Person and Work of Jesus Christ

From "Some Recent Phases of German Theology" By Bishop Nuelsen, D. D., M. E. Church, Omaha, Nebraska.

Chapter 33 The Certainty and Importance of the Bodily Resurrection of Jesus Christ from the Dead

By Rev. R. A. Torrey, D. D.

Chapter 34 The Personality and Deity of the Holy Spirit

By Rev. R. A. Torrey, D.D.

Chapter 35 The Holy Spirit and the Sons of God

By Rev. W. J. Erdman, D. D., Germantown, Philadelphia, Pennsylvania.

Chapter 36 Observations on the Conversion and Apostleship of St. Paul

By Lord Lyttelton, Analyzed and Condensed by Revelation J. L. Campbell, D. D., Cambridge, Mass.

Chapter 37 Christianity No Fable

By Rev. Thomas Whitelaw, M.A., D. D., Kilmarnock, Ayreshire, Scotland.

Chapter 38 The Biblical Conception of Sin

By Thomas Whitelaw, M. A., D. D., Kilmarnock, Ayrshire, Scotland.

Chapter 39 Paul's Testimony to the Doctrine of Sin

By Professor Charles B. Williams, B. D., Ph. D., Southwestern Baptist Theological Seminary, Fort Worth, Texas.

Chapter 40 Sin and Judgment to Come

By Sir Robert Anderson, K. C. B., L. L. D., London, England.

Chapter 41 What Christ Teaches Concerning Future Retribution

By William C. Proctor; F. Ph., Croydon, England.

Chapter 42 The Atonement

By Professor Franklin Johnson, D. D., L. L. D. Author of Â"Old Testament Quotations in the New Testament,Â" etc., Chicago, Ill.

Chapter 43 At-One-Ment, By Propriation

By Dyson Hague, M. A., Vicar of The Church of the Epiphany, Toronto, Canada. Canon of St. PaulÂ's Cathedral. London, Ontario (1908-1912).

Chapter 44 The Grace of God

By C. I. Scofield, D. D., Editor "Scofield Reference Bible

Chapter 45 Salvation by Grace

By Thomas Spurgeon, London, England.

Chapter 46 The Nature of Regeneration

By Thomas Boston (1676-1732).

Chapter 47 Regeneration, Conversion and Reformation

 By George W. Lasher. D. D., L. L. D., Author of Â"Theology for Plain People.Â" Cincinnati, Ohio.

Chapter 48 Justification by Faith

By H. C. G. Moule, Bishop of Durham, Durham England.

Chapter 49 The Doctrines that Must be Emphasized in Successful Evangelism

By Evangelist L. W. Munhall, M.A., D. D., Germantown, Philadelphia, Pennsylvania.

Chapter 50 Preach the Word

By the Late Howard Crosby, Chancellor of the University of the City of New York.