I am exploring this commentary in my library......I notice the Old Testament is in 24 resources, and the New Testament is one resource edited by Durken. But the product page shows a list of 25 books (24-OT, 1-NT), yet the little gray boxes below show both OT and NT as one-volume books. Do I understand correctly, that the print version is 2-one volume books, but in Verbum it is 24 OT and 1 NT? Thanks for the clarification!