Exodus 19:18-20

New Century Version

¹⁸ 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. ¹⁹ The sound from the trumpet became louder. Then Moses spoke, and the voice of God answered him.

²⁰ 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.