Dr. Spiros Zodhiates' greatest contribution to Bible students everywhere is the Hebrew-Greek Key Word® Study Bible, which uses the Strong's numbering system to take the reader to the Hebrew and Greek words behind key words in the New American Standard Bible® (NASB) English text, and uses AMG's own special codes on the New Testament NASB English text to reveal the nuances of Greek grammar. In addition, there are extensive exegetical footnotes explaining the most difficult passages of the Old and New Testaments. Words of Christ in Red; NASB Center-Column References.