Great resource, as stated in previous comments, this is needed for every student of the word. Along with the new testament dictionary and strong's concordance, this allows you to delve into deep study for yourself.
This resource has every word in the Greek New Testament fully explained out using the Strongs Concordance numbering system. Just look up a word and corresponding number in the Strongs Concordance that matches the verse you are studing. Then just look up this same Strongs number in the Complete Word Study Dictionary. Its that simple. This resource will help you to study and understand God's Word in the original language that God inspired it to be written. So much false doctrine, error, and supposed contradictions come about when people try to study the Bible using the meanings of words as we know them today in the English language. 2 Tim. 2:15, "...RIGHTLY dividing the Word of Truth," the Bible.