1 Kings 19:11-13:
Then He said [to Elijah], "Go out, and stand on the mountain before the LORD." And behold, the LORD passed by, and a great and strong wind tore into the mountains and broke the rocks in pieces 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. So it was, when Elijah heard it, that he wrapped his face in his mantle and went out and stood in the entrance of the cave. Suddenly a voice came to him, and said, "What are you doing here, Elijah?"the Voice of God...
not in the commotion of the wind; not in the quaking of the earth; not in the roaring of the fire.
... but in a whisper.