Ancient Hebrew is not an easy language to master, and so it is often useful to have a BDB Hebrew Lexicon at hand. But that too can be difficult to use (especially if you are relatively new to Hebrew). This Index is the link between the text you are working on, and the detailed knowledge "hidden" in the Lexicon. The trouble is, the Index is so helpful I feel almost guilty using it. (Hebrew shouldn't be easy!) Just one provision, if you are over 45 you will probably want to go out and buy a magnifying glass, the print is extremely small, and can be difficult to see.