We cannot know that we are illuminated by a great light simply by looking up into the sky. But if we lower our heads and look down at our feet, we can clearly see the long, dark shadow that stretches out from us. We know that the darker and blacker that shadow is, the brighter is the light that shines upon us. Thus, we have been told to look at our own dark shadows [within].
I experience the Divine Presence in many ways, but the form most often available to me is "spiration," or the act of breathing in which the Spirit often manifests itself and communicates itself. This process has given rise to the experience of inspiration, or in-spiration, in which the Spirit breathes into us. To be aware of God through spiration is to become conscious of God's subtle Presence through our own breathing.
We all share in the eternal spiration of the Spirit. When I am sufficiently absorbed in the experience of divine spiration, I realize inwardly my dependence, and that of all beings, on this subtle action of the Source.