This book expounds on the lives and thoughts of Augustine, Martin Luther, and John Calvin. It begins with an introduction about “savoring the sovereignty of grace in the lives of flawed saints.” Piper explains that each of these men “had this in common: they experienced, and built their lives and ministries on, the reality of God’s omnipotent grace.” (18) Noting some of the flaws of each of these men, Piper believes that “the glory of God, however dimly, is mirrored in the flawed lives of his faithful servants.” (37)

Each chapter is about half biography and half theological survey and averages 34 pages. There is a pattern to each chapter: after a brief introduction John Piper provides a biographical sketch and then brings out a prominent theme from author’s theology. For Augustine, the theme is sovereign joy, for Luther it is sacred study, and for Calvin it is the divine majesty of the Word.

After these chapters, Piper concludes with four lessons we can learn from the “flawed saints.” “1) Do not be paralyzed by your weaknesses and flaws… 2) In the battle against sin and surrender, learn the secret of sovereign joy… 3) Supernatural change comes from seeing Christ in his sacred Word… 4) Therefore, let us exult the exposition of the truth of the Gospel and herald the glory of Christ for the joy of all peoples.” (143-148)

It is evident throughout the book that John Piper has done his homework; quoting often from primary texts and secondary sources. While there may be some over simplification in regard to the theological themes, Piper’s points are nonetheless insightful and practical. Each chapter serves as a great introduction to the lives and thoughts of these Christian men. The Legacy of Sovereign Joy provides a stimulating resource for those looking to discover some of the motivating themes of the Reformed tradition.