Thanks for the responses so far; I will look into them.
I'm not sure if it's exactly what you're going for, but it's an in-depth commentary on scripture by an Orthodox source.
I should have been more clear. I am looking mostly for an explanation of how Orthodoxy views, uses, and interprets the scriptures. Not necessarily a straight-up commentary, per se, but more broad than that.
(If there is a Roman Catholic or other book that expresses more or less Orthodox views on the subject, that would be fine too.)