And do not be conformed to this world, but be transformed by the renewing of your mind, so that you may prove what the will of God is, that which is good and acceptable and perfect. (Romans 12:2, NASB95)
It is so easy to get used to reading certain verses in the Bible that we sometimes miss the real meaning behind the words we are reading. For instance, this verse in Romans is very familiar to many. I know I have read it many times and even used it in teaching.