I have $50 dollars in gift cards for Barnes and Noble and I was wondering if any of you can give me some recommendations on good books on the letter to the Hebrews. I have the major commentaries (Bruce, Lane, Koester, Attridge, DeSilva, etc.), but I was wondering if there are any good studies on the grammar, language, syntax, theology (not counting Lindras), history, textual criticism, etc. Any help would be greatly appreciated. Thanks.