Exodus 20:18-21

¹⁸And all the people saw the thunderings, and the lightnings, and the noise of the trumpet, and the mountain smoking: and when the people saw it, they removed, and stood afar off. ¹⁹And they said unto Moses, Speak thou with us, and we will hear: but let not God speak with us, lest we die. ²⁰And Moses said unto the people, Fear not: for God is come to prove you, and that his fear may be before your faces, that ye sin not. ²¹And the people stood afar off, and Moses drew near unto the thick darkness where God was.