Exodus 20:18 New International Version (NIV)
18 When the people saw the thunder and lightning and heard the trumpet and saw the mountain in smoke, they trembled with fear. They stayed at a distance
Sometimes God will speak to his people in a display of power. Then, there are times when he will speak in a whisper. When he speaks, he does so in a way that best will accomplish his purposes. Sometimes it takes a thunderous way to get our attentions, and at other times, it is a whisper. How has God spoken to you? I have heard his voice and when I have heard it, I receive great comfort and peace, as well as, reassurance.