Why Doesn't The World Understand

Romans 11: 7-8, The world is in a state of slumber concerning spiritual things.  It is God's will for the world, as a whole, to not see nor hear His law.  They cannot understand simple, obvious truths concerning the Sabbath and the Holy Days, nor their relevance to God's plan of salvation.  Deuteronomy 29:4, There is a group of people meant to see and hear God's way of life.  Matthew 20:16. Many are called, but few are chosen.  One of the great truths of God's plan for mankind is the Kingdom of God.  Yet, it is a mystery to the world.  Mark 4:9-12.