Q. How do I find what Hebrew or Greek word lies behind the English words in the Bible?

Bible software like Accordance (present on seminary computers) will give this information.  Free sites on the internet will also, such as Blue Letter Bible.  In the reference collection the Hebrew English (BS1121 .K63 Ref) and Greek English concordances (BS2302 .K634 Ref.)by John Kohlenberger will do this as well.  Both use the New International Version English translation.