We can't expect to be able to read the hand writing on the wall if we are not in the family of God. Those that are initiated into the family of God, that are born again, walking by faith, being a doer of God's word, hungering and thirsting for His righteousness will be the one's that receive illumination, to whereas His word becomes a light on our paths of life, a lamp unto our feet. He will open our understanding to where we can understand the scriptures.