Exodus 19:7-9

7So Moses came and called for the elders of the people, and laid before them all these words which the Lord commanded him.

8Then all the people answered together and said, “All that the Lord has spoken we will do.” So Moses brought back the words of the people to the Lord.

9And the Lord said to Moses, “Behold, I come to you in the thick cloud, that the people may hear when I speak with you, and believe you forever.” So Moses told the words of the people to the Lord.