Exodus 19:18-20 Common English Bible (CEB)
18 Mount Sinai was all in smoke because the Lord had come down on it with lightning. The smoke went up like the smoke of a hot furnace, while the whole mountain shook violently. 19 The blasts of the horn grew louder and louder. Moses would speak, and God would answer him with thunder. 20 The Lord came down on Mount Sinai to the top of the mountain. The Lord called Moses to come up to the top of the mountain, and Moses went up.