Out of heaven he made you to hear his voice, that he might instruct you: and on earth he showed you his great fire; and you heard his words out of the middle of the fire.
And mount Sinai was altogether on a smoke, because the LORD descended on it in fire: and the smoke thereof ascended as the smoke of a furnace, and the whole mount quaked greatly.
And the LORD said to Moses, See, I come to you in a thick cloud, that the people may hear when I speak with you, and believe you for ever. And Moses told the words of the people to the LORD.
And the glory of the LORD stayed on mount Sinai, and the cloud covered it six days: and the seventh day he called to Moses out of the middle of the cloud.
Take you therefore good heed to yourselves; for you saw no manner of similitude on the day that the LORD spoke to you in Horeb out of the middle of the fire:
See that you refuse not him that speaks. For if they escaped not who refused him that spoke on earth, much more shall not we escape, if we turn away from him that speaks from heaven: