Exodus 19:7-9

So Moses returned from the mountain and called together the elders of the people and told them everything the LORD had commanded him. And all the people responded together, “We will do everything the LORD has commanded.” So Moses brought the people’s answer back to the LORD. Then the LORD said to Moses, “I will come to you in a thick cloud, Moses, so the people themselves can hear me when I speak with you. Then they will always trust you.” Moses told the LORD what the people had said.