Manifest, near, moving in the cave (of the heart) is the great Being. In it everything is centred which ye know as moving, breathing, and blinking, as being and not-being, as adorable, as the best, that is beyond the understanding of creatures.

In plain words: The great Being is close to us and plain to see. It lives in the hidden space of the heart. Everything that moves, breathes or blinks rests in it, and so does everything that exists or does not. It is worthy of worship, the very best, and beyond what our minds can grasp.