This book, written in responses to the liberalism which arose in the early 1900s, is a classic defense of orthodox Christianity. To expose the fallacies of liberalism and strengthen the orthodox position, Dr. Machen establishes the importance of scriptural doctrine and contrasts the teachings of liberalism and orthodoxy on God and man, the Bible, Christ, salvation, and the church. These issues remain in conflict today, testifying to the continuing relevance of this important work.