Exodus 20:18-20

Young's Literal Translation

¹⁸ And all the people are seeing the voices, and the flames, and the sound of the trumpet, and the mount smoking; and the people see, and move, and stand afar off,

¹⁹ and say unto Moses, `Speak thou with us, and we hear, and let not God speak with us, lest we die.'

²⁰ And Moses saith unto the people, `Fear not, for to try you hath God come, and in order that His fear may be before your faces -- that ye sin not.'