Exodus 19:18-25

Mount Sinai was covered with smoke, because the LORD came down on it in fire. The smoke rose from the mountain like smoke from a furnace, and the whole mountain shook wildly. The sound from the trumpet became louder. Then Moses spoke, and the voice of God answered him. When the LORD came down on top of Mount Sinai, he called Moses to come up to the top of the mountain, and Moses went up. The LORD said to Moses, “Go down and warn the people that they must not force their way through to see me. If they do, many of them will die. Even the priests, who may come near me, must first prepare themselves. If they don’t, I, the LORD, will punish them.” Moses told the LORD, “The people cannot come up on Mount Sinai, because you yourself told us, ‘Set a limit around the mountain, and set it apart as holy.’ ” The LORD said to him, “Go down and bring Aaron up with you, but don’t allow the priests or the people to force their way through. They must not come up to the LORD, or I will punish them.” So Moses went down to the people and told them these things.