Exodus 19:18-20

Leeser(i) 18 And mount Sinai smoked in every part, because the Lord had descended upon it in fire; and the smoke thereof ascended as the smoke of a furnace, and the whole mount quaked greatly. 19 And the voice of the cornet went on, and waxed louder and louder; Moses spoke, and God answered him with a loud voice. 20 And the Lord came down upon mount Sinai, on the top of the mount; and the Lord called Moses up to the top of the mount, and Moses went up.