A spiritual state is the key to all that is of God. Spirituality is the door, and the key to the door, beyond which lies everything that relates to God. Without spirituality, there is no way through, the door is closed. The word "cannot" stands written as an impassable barrier - "cannot understand or receive the things of the Spirit of God." In reality, our lives are set in a realm of things spiritual. God is Spirit, therefore the supreme Reality, the supreme factor, the ultimate environment of this universe - God - is Spirit. Man, in the deepest and truest nature of his being, is spirit. He has a soul and a body. Evil forces in great power encircle man on this earth, and they are spiritual forces. But more, the entire temporal order is constituted upon spiritual principles and meanings. The visible things are but symbols of spiritual things; the seen things are types of unseen things. God has constituted this whole universe, in every aspect and detail, upon a basis of spiritual principles...