There is always a sound being emitted from the earth to the heavens and from the heavens to the earth - a divine exchange, if you will.
It exists in the unseen realm in the form of energy patterns, waves, and particles, and while the great majority of it is not audible to our natural ear, we can perceive it because we are a part of it.
God "hears" what we say, and I believe He has an ever-flowing answer that we need to be aware of and "tune into" with our spirit man in order to tap into the constant communion we may have with Him.
We typically refer to it as "spirit to spirit, deep to deep," as does Scripture. "...that they may be one just as We are one: I in them and You in Me," Jesus prays in John 17 on our oneness with Him.
Whether we are aware of it or not, our world as we know it would not exist without that ongoing exchange... "in Him all things consist." When God created our entire existence, He set it in motion by releasing His sound, His Word, "Let there be Light."
