Since its publication a decade ago, Let the Nations Be Glad! has provided thousands of seminary students, missionaries, and pastors with a sound theological foundation for missions. Piper now offers a revised and expanded edition of this theological and biblical defense of God's supremacy in all things. Drawing on texts from the Old and New Testaments, Piper demonstrates that worship is the ultimate goal of the church and that proper worship drives missionary outreach. He describes prayer as the fuel of missions work because of its focus on a relationship with God rather than the needs of the world. He goes on to illustrate that while suffering is the price of missions, God is worthy of any sacrifice. He examines whether Jesus is the only way to salvation and discusses the extent of the missionary enterprise, seeking to define the scope of the task and the means to reaching all nations. This revised and expanded edition contains updated references to contemporary literature and debates and new illustrations and quotations. This edition also boasts a new preface and a final section devoted to the practical outworking of compassion and worship. Included in this new section is a chapter encouraging passion for God's supremacy and compassion for man's soul, based on Jonathan Edwards's musings on the unity of motives for world missions. Concluding this section is a chapter containing Piper's reflections on New Testament worship as an inner reality more than an external form. Let the Nations Be Glad! is essential reading for all those involved in or preparing for missions work and provides inspiring theological reflection for college and seminary students. This book also offers enlightenment for pastors, youth workers, those involved in campus ministries, and all who want to connect their labors to God's global purposes.