In "The Origin of Paul's Religion," John Gresham Machen meticulously unravels the intricate relationship between the historical Jesus and the Apostle Paul, presenting a robust defense of Christian orthodoxy in the wake of early 20th-century liberal theology. Employing a blend of rigorous textual analysis and historical-critical methods, Machen underscores the continuity between the teachings of Christ and the missionary endeavors of Paul, emphasizing the authenticity and uniqueness of Pauline doctrine. The book emerges as a significant scholarly work within the context of its time, responding to the growing skepticism surrounding biblical authority and the person of Christ. John Gresham Machen (1881-1937) was a prominent American Presbyterian theologian and New Testament scholar whose commitment to biblical inerrancy and evangelical principles profoundly shaped his writings. His background in classical studies and his education in both Europe and the United States influenced his rigorous approach to theological inquiry, particularly as he faced the challenges posed by modernism. Machen's passionate defense of traditional Christian beliefs led him to pen works that not only examined theological foundations but also engaged contemporary cultural dialogues. This book is an essential read for anyone seeking to deepen their understanding of Pauline theology and its roots in the life of Christ. Machen's clarity of thought and eloquent prose offer readers a compelling insight into the early Christian experience, making it indispensable for students of theology, history, and religious studies.