Ex 33:16 How will anyone know that you look favorably on me—on me and on your people—if you don't go with us? For your presence among us sets your people and me apart from all other people on the earth."
It is the presence of God within that sets God's people apart from the rest of the world. As Christians we MUST be different from the world. This difference goes beyond being a morally good person. It means standing up for Godly principles when others stand on societal or personal principles. It means risking loss of comfort, friends, status etc in order to gain God's blessings, grace, and mercy. The presence of good things in your life does not automatically mean blessings from God.