The 5th book of the new testament(Acts of the Apostles) records the encounter with God's spirit as they hear the sound of a rushing mighty wind. In close encounters before the LORD, you may hear a sound of wind or energy which is often rare when encountered. When I was a young boy, about the age of 5 years old I had an encountered with God and did not know that it was in fact God. I remember I opened up the back door of my house and saw a "Golden force field of energy" stand before me. But at the time it sounded like "Energy" or perhaps "Wind".

You must know that the sound of energy is God's spirit moving. God is life. God is a verb. God is an action in progressive state. God is in all things and is greater than all things combined. Science speaks about the "Big bang theory" and how "SOUND" was the first thing established in the universe.

Before anything is done(Miracles, Prophecy, Healing) sound is always sent first into the "Universe", then as that word which is God's is ready for fulfillment, that work will be completed or fulfilled. So we see that sound has an important place before God's kingdom. Because before it comes, "It must always be announced"