Out of heaven he made you to hear his voice, that he might instruct you: and upon earth he showed you his great fire; and you heard his words out of the midst of the fire.
And mount Sinai was completely in smoke, because the LORD descended upon it in fire: and the smoke of it ascended as the smoke of a furnace, and the whole mount quaked greatly.
And the LORD said unto Moses, Lo, I come unto you in a thick cloud, that the people may hear when I speak with you, and believe you forever. And Moses told the words of the people unto the LORD.
And the glory of the LORD abode upon mount Sinai, and the cloud covered it six days: and the seventh day he called unto Moses out of the midst of the cloud.
See that you refuse not him that speaks. For if they escaped not who refused him that spoke on earth, much more shall we not escape, if we turn away from him that speaks from heaven: