Firstly, believing is not the same as knowing. As well, knowing can can be grounded upon a belief system. These are complex and philosophical issues, subject to endless debate. Further, any definition of God is categorically distinct from that which constitutes human understanding. Otherwise, we would not be engaged in this discussion. Why is God unknowable? Why is God an unthinkable thought? To think anything, one must have a frame of reference. A point of reference, grounded in reality. Otherwise thought are speculative and philosophical. Perhaps God does exist, yet God cannot exist as a belief, only a fact of self-evident knowledge. As with belief, one must question the nature and condition of knowledge. There is an inherent difficult in accessing ultimate knowledge and understanding. It seem clear in order to approach and understanding such questions, one must acknowledge the degree that conditioning has influenced, if not determined the results. If God does exist and is subject human understanding, this necessitates, not "ordinary" knowledge, but direct knowledge. Direct knowledge is transcendental; not subject to conditional understanding or reflection. Why would we assume that establishing a connection with the ultimate fact lies within out thought processes? Clearly, it is our thought processes that create only speculative and debatable concepts of God. Direct perception is a paradigm shift, and requires freedom from conditional thinking. Opinion and tradition are a block to direct perception. God is not God, in term of our present ideation. One cannot hope to experience God in terms of thoughts and definitions. Again, we are attempting to access the unknown with the know. Is that not a categorical error. A different approach is necessary. I cannot offer a well defined method, short of transcending conditioned thoughts and habits. This requires absolute sincerity, and a compelling need to change. Unfortunately, conditioned thinking is well established, and the most difficult process to transcend. Acknowledging that one is conditioned, and therefore limited is the beginning of genuine understanding. In a real sense, we must institute a self-conscious discipline in order to monitor and understand the nature and origin of our thought processes, and arrest reflective thinking and responses. There is an understandable resistances to this method. One will think and act differently to most of their friends, neighbors, and family. Yet, eventually what is achieved is a quality of mindfulness that will lead to true self-knowledge, and the very conditions that allow for a direct perception of God. Not the God, as defined in any particular religion. But the God that accords with your innate understanding; a truly personal God. Not an entity, but a principle that connects you with the world and the universe. God consciousness is the acquire ability to experience your place in the universe, and the undefinable oneness of all things. In a real way it is like coming home, but in an ultimate sense. Of course, words cannot necessary persuade or inform this truth.