J. Gresham Machen's fascinating account of the Apostle Paul explains and sheds light on the religious beliefs of the titular subject, which remain an important component of Biblical theology. Paul was one of the first proponents of Christianity, establishing some of the first recorded Christian churches in the 1st century AD. As an early preachers of the religion Paul's attitudes are, in Machen's eyes, a vital component of the faith which must not be ignored or discounted. Some scholars have disavowed aspects of Paul's writings, deeming them confined to the culture of his time and therefore of little value to Christians in the modern day. Machen considered things differently and wrote this book in response. He establishes that Paul's words and spiritual mores are a crucial part of the Christian doctrine, that he is the primary interpreter of Jesus Christ himself, and that therefore his religion is - for the most part - authentic Christianity.