This book is a great resource for me. At times Paul's writings do "seem" to contradict some red letter words and some other Gospel writers, but this book lays out understanding for what Paul is saying based on context of answers to possible questions within the church, "wrong" thinking and teaching within the early church by different factions, and most importantly as an ex-Pharisee from a VERY deep understanding of the Old Testament.
VERY GOOD READ!