Lead a group of men in my church through this book. A lot of them found the initial chapters a bit more difficult to weigh through. I would agree that part 1 felt more polemical, and could feel a bit more technical or abstract for those less familiar with this sort of writing or subject matter. However, part 2 seems to take a shift in tone. In these latter chapters especially, one of the things I appreciated about this book was the doxological tone and orientation naturally woven throughout. As I read, I found myself experiencing gratitude to God and standing in awe of Christ. I believe this book originally came out of a series of lectures Murray delivered (?). And it certainly reads like that. It feels a bit different in that way from other systematic treatments of soteriology. Very insightful and well done.