It's the only truth written to mankind, the anvil that's worn out all the hammers, as written in it's original manuscript, which we have in much more reliable copies than any other relied upon historical documents. The NIV which you speak of is considered a "dynamic" version and not to be studied from, even though it is still exclusive in it's gospel message. The NASB is a much more literal translation. The critical issue is this.....! The versions that we have are crystal clear on the Gospel of Jesus Christ. To dismiss the text with the "written by men" comment without understanding the fundamental truth of the finished work of Christ on the cross is reckless at best and eternally catastrophic at worst.