The author examines the American Christian church by tracing religion's roots in human nature and reason, acknowledging denominational diversity, and calling for candid self-criticism from within. He explores the church's social responsibilities, organizational and financial habits, and the danger of decadence, while urging a practical reformation focused on social redemption. Emphasis falls on renewing evangelism and leadership, adapting institutions to modern social conditions, and equipping pastors, teachers, and young people to make religious witness ethically relevant and institutionally effective in contemporary life.