NIV Bible Test It has been said by many that the NIV is the most readable and accurate Bible on the market today and that it is based on older and more reliable manuscripts than the King James Bible. In regard to the above statements an “acid test” is the only fair way to put the NIV and the KJV “to the test” as one might say… so get out you NIV, a pen and when you have completed the test I encourage you to then take a KJV and see the result…