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.