All final spiritual reference is to be the silence beyond sound. The word made flesh is the first sound. Beyond that sound is the transcendent unknown, the unknowable. It can be spoken of as the great silence, or as the void, or as the transcendent absolute.
Silence is no passive thing. It is a vibrant presence which fills any vacuum in sound and conveys its own living quality. Most of us know the truth of the phrase "the silence that sounds," and the old adage "silence is golden" means more than just that it is safe or wise. It means that it is golden in the sense of being filled with light.