Exodus 20:20 ASV

¹⁸  And all the people perceived the thunderings, and the lightnings, and the voice of the trumpet, and the mountain smoking: and when the people saw it, they trembled, and stood afar off.

¹⁹  And they said unto Moses, Speak thou with us, and we will hear; but let not God speak with us, lest we die.

²⁰  And Moses said unto the people, Fear not: for God is come to prove you, and that his fear may be before you, that ye sin not.

²¹  And the people stood afar off, and Moses drew near unto the thick darkness where God was.

²²  And Jehovah said unto Moses, Thus thou shalt say unto the children of Israel, Ye yourselves have seen that I have talked with you from heaven.