Many scholars of the New Testament at some point in their scholarship write a commentary on the book of Romans. Romans is one of those very coherent books to read in the New Testament.
However, this commentary by Douglas Moo, professor of New Testament at Trinity Evangelical Divinity School, appears to be a thorough and magnificent work on the book of Romans. Moo makes comments on both the English and Greek text of Romans. Moo's commentary on Romans seems to excel other commentaries on Romans in these three categories:
1. It has the deepest exegetical notes on the Greek text of Romans by using thousands of footnotes dealing with the Greek text.
2. It has the deepest theological explanation on Romans including many additional excurses on serious points of theology.
3. It give the most complete consideration of alternative interpretations of the text.
I have read many other commentaries on both the Greek and English text of Romans and I can tell you that this commentary on Romans by Dr. Moo will probably not be superceded by any for decades to come. It well worth the price since this commentary will provide material which the reader can chew on for a long, long time.