Exodus 19:18-20 Modern English Version (MEV)
18 Now Mount Sinai was completely covered in smoke because the Lord had descended upon it in fire, and the smoke ascended like the smoke of a furnace, and the whole mountain shook violently. 19 When the sound of the trumpet grew louder and louder, Moses spoke, and God answered him with a voice.[a]
20 The Lord came down on Mount Sinai, on the top of the mountain. And the Lord called Moses up to the top of the mountain, and Moses went up.