All Bibles are useful. No one translation is the best because all translations are mediated through human understandings.
ahh ahh. not all. be careful bro. if you've checked, there was that NKJV by Westcott and Hort. and not just the NKJV but also other modern day translations.
here are some reasons why other translations specially the NKJV is questionable.
1. The text of the NKJV is copyrighted by Thomas Nelson Publishers, while there is no copyright today on the text of the KJV. If your KJV has maps or notes, then it may have a copyright, but the text itself does not.
2. It is estimated that the NKJV makes over 100,000 translation changes, which comes to over eighty changes per page and about three changes per verse! A great number of these changes bring the NKJV in line with the readings of such Alexandrian perversions as the NIV and the RSV. Where changes are not made in the text, subtle footnotes often give credence to the Westcott and Hort Greek Text.
3. While passing off as being true to the Textus Receptus, the NKJV IGNORES the Receptus over 1,200 times.
4. In the NKJV, there are 22 omissions of "hell", 23 omissions of "blood", 44 omissions of "repent", 50 omissions of "heaven", 51 omissions of "God", and 66 omissions of "Lord". The terms "devils", "damnation", "JEHOVAH", and "new testament" are completely omitted.
5. The NKJV demotes the Lord Jesus Christ. In John 1:3, the KJV says that all things were made "by" Jesus Christ, but in the NKJV, all things were just made "through" Him. The word "Servant" replaces "Son" in Acts 3:13 and 3:26. "Servant" replaces "child" in Acts 4:27 and 4:30. The word "Jesus" is omitted from Mark 2:15, Hebrews 4:8, and Acts 7:45.
6. The NKJV confuses people about salvation. In Hebrews 10:14 it replaces "are sanctified" with "are being sanctified", and it replaces "are saved" with "are being saved" in I Corinthians 1:18 and II Corinthians 2:15. The words "may believe" have been replaced with "may continue to believe" in I John 5:13. The old straight and "narrow" way of Matthew 7:14 has become the "difficult" way in the NKJV.
7. In II Corinthians 10:5 the KJV reads "casting down imaginations", but the NKJV reads "casting down arguments". The word "thought", which occurs later in the verse, matches "imaginations", not "arguments". This change weakens the verse.
8. The KJV tells us to reject a "heretic" after the second admonition in Titus 3:10. The NKJV tells us to reject a "divisive man". How nice! Now the Alexandrians and Ecumenicals have justification for rejecting anyone they wish to label as "divisive men".
9. According to the NKJV, no one would stoop so low as to "corrupt" God's word. No, they just "peddle" it (II Cor. 2:17). The reading matches the Alexandrian versions.
10. Since the NKJV has "changed the truth of God into a lie", it has also changed Romans 1:25 to read "exchanged the truth of God for the lie". This reading matches the readings of the new perversions, so how say ye it's a King James Bible?
11. The NKJV gives us no command to "study" God's word in II Timothy 2:15.
12. The King James reading in II Corinthians 5:17 says that if any man is in Christ he is a new "creature", which matches the words of Christ in Mark 16:15. The cross reference is destroyed in the NKJV, which uses the word "creation."
13. As a final note, the NKJV is very inconsistent in it's attempt to update the language of the KJV. The preface to the NKJV states that previous "revisions" of the KJV have "sought to keep abreast of changes in English speech", and also that they too are taking a "further step toward this objective". However, when taking a closer look at the language of the NKJV, we find that oftentimes they are stepping BACKWARDS! Please note a few examples of how well the NKJV has "kept abreast of the changes in the English language":
be careful with people who put down the original King James Version, and their reason is that "it's too hard to read, it's too hard to understand..." ect. well, understanding God's Word is not your job. you just have to read it and by Christ's apportioned grace to you, He will give you the Spirit that teaches all truth. it is the Spirit that gives you understanding. Proverbs 3:5 says, "Trust in the LORD with all your heart and lean not on your own understanding; 6 in all your ways acknowledge him, and he will make your paths straight."
i personally have an NIV and i found no error with it yet. but in times i get confuse, i refer to King James, then to the original Hebrew and Greek for support and clarifications of the original word and its meaning. I'm blessed to have a software.
Jesus bless you. take care.