Great Background
If you want to know the story behind the passage, William Barclay is your man. His books are all rich in helping you understand the whys and when of the books of the New Testament. His commentary of Romans is no exception. It helps you understand why the book was written, to who it was written. No one provides better insight. Because of his critical approach, he does sometime question authenticity and leave the reader wondering if the passage truly is inspired or simply a historical recoded of fact or tradition of man.