The Spirit prompts us sometimes in unsuspecting ways.  His voice often comes to us in a whisper.  The heart not attuned hears nothing.  I fear sometimes He has something to say to me and I am tuned to another frequency, focused on other things.  The Lord speaks softly.  He seldom raises His voice.  Samuel said, “Speak Lord, your servant is listening.”  To tune Him in means to tune some other things out.

“And he said, Go forth, and stand upon the mount before the LORD. And, behold, the LORD passed by, and a great and strong wind rent the mountains, and brake in pieces the rocks before the LORD; but the LORD was not in the wind: and after the wind an earthquake; but the LORD was not in the earthquake:   And after the earthquake a fire; but the LORD was not in the fire: and after the fire a still small voice.”  1 Kings 19:11-12 (KJV)