Go to: http://www.onlinebible.com/ for a free download
My husband explained to me how this was done long, long before the age of computers and I still don't really understand it, save for the fact it sounds exausting as well as exhaustive. Here is the Wikipedia link to Mr. Strong's story, told better than I ever could:
http://en.wikipedia.org/wiki/Strong's_Concordance Thank you Mr. Strong. We all benefit from your labors.
Some clever people have put Mr. Strong's laborious work into computers and we now have a wealth of resources available for Bible reference. The Online Bible is only one of many. I am partial to it because I find it extremely easy to use, it is entirely free (not even any gimmicks); it also has many international versions of the Bible available as add ons. Of course I chose to donate since the European based company doesn't even use advertising. And it is such a good cause.
Here again, is the website for the free download: http://www.onlinebible.com/