Since the majority of us are not Ancient Greek Scholars, we have to depend on those who are. One such is Jason David BeDuhn who wrote "Truth in Translation: Accuracy and Bias in English Translations of the New Testament" He compared nine English Translations. The King James (KJV), The Amplified Bible(AB), The Living Bible (LB), The New American Bible (NAB), The New American Standard Bible (NASB), The New International Version (NIV), The New World Translation (NW), The New Revised Standard Version (NRSV) and Today's English Version (TEV).
His remarks on John 1: 1.. Chapter 11: A Discussion of John 1:1 "Surpisingly, only one, the NW (New World Translation), adheres to the literal meaning of the Greek, and translates "a god." "Translators of the KJV, NRSV, NIV, NAB, NASB, AB, TEV, and the LB all approached the text at John 1:1 already believing certain things about the Word...and made sure that the translations came out in accordance with their beliefs....Ironically, some of these same scholars are quick to charge the NW translation with "doctrinal bias" for translating the verse literally, free of KJV influence, following the sense of the Greek. It may very well be that the NW translators came to the task of translating John 1:1 with as much bias as the other translators did. If just so happens that their bias corresponds in this case to a more accurate translation of the Greek" "Some early Christians maintained their monotheism by believing that the one God simply took on a human form and came to earth --in effect, God the Father was born and crucified as Jesus. They are entitled to their belief, but it cannot be derived legitimately from the Gospel according to John. "John himself has not formulated a Trinity concept in his Gospel." "All that we can ask is that a translation be an accurate starting point for exposition and interpertation. Only the (N)ew (W)orld translation achieves that, as provocative as it sounds to the modern reader. The other translations cut off the exploration of the verse's meaning before it has even begun."
John David BeDuhn is the Associate Professor of Religious Studies at Northern Arizona University in Flagstaff. He holds a B.A. in Religious Studies from the University of Illinois, Urbana, a M.T.S. in New Testament and Christians Origins from Harvard Divinity School and a Ph.D. in Comparative Study of Religions from Indiana University