Bro. Luke, Regardless of the credibility of the author of the book, your question is a good one. Did early church fathers disagree about aspects of soteriology? The answer is, not really. The truth is that what would become the Calvinist false-concept of Predestination did not even come into existence until Augustine. Even then, it was quite as corrupt as Calvin made it. Yes, there were some sentiments of the absaluteness of God's grace, but cannot be confused with Calvinism. Neither the early church fathers, nor the majority of the reformers held to any such thing.
