Genesis is a "book". The "collection" (I think that is what you mean by "volume") would be "bible" or "old-testament" or "pentateuch" or "torah", and they have no directly-associated `30041` events. One event for Genesis could have all of those collection labels, so that anyone could find it with them. Collections aren't `30040' events; they're more like book-specific labels. Only the actual book contains sections, usually the content within a chapter.
"Bible" translates to "library". It's a set of books, and different churches include different books in the set. The Old Testament content overlaps with the Torah, which is the Jewish library.
