Why does Les spend so much time in the book of Romans?
Romans is the first book of doctrine Paul writes in the New Testament, so it is where most time must be spent. It lays the doctrinal groundwork for the Body of Christ, so the teacher returns to it repeatedly. This is why it receives sustained attention.
Les explains that Romans is the first book of doctrine Paul writes in the New Testament, and therefore it is where we have to spend most of our time. He emphasizes that the truths about becoming members of the Body of Christ come only from Paul's writings, not from the Gospels or the Old Testament. Because Romans is foundational for that doctrine, he returns to it again and again, giving it sustained attention.