Green has done a good job reviewing the various interpretations and background behind II Peter and Jude, interacting somewhat with the main scholarship, most notably Bauckham, whose commentary is the standard work on these two books but has two strikes against it. His book is highly academic and unsuitable for a popular audience, and it has some questionable historical reconstructions about the authorship of II Peter. Green avoids both these features and spends a good deal of time arguing against Bauckham's thesis while keeping much of his good work intact. His additions beyond what Bauckham has to say are useful pastoral aids in seeing the relevance of such ignored books to present-day Christian life. If you're looking for a scholary commentary, get Bauckham's book and use this as a more pastoral supplement and a source for critique of Bauckham's more critical views. If you're looking for an aid to sermons or Bible studies, Green's book is ideal.