Exodus 19:17-19 Christian Standard Bible (CSB)
17 Then Moses brought the people out of the camp to meet God, and they stood at the foot of the mountain. 18 Mount Sinai was completely enveloped in smoke because the Lord came down on it in fire. Its smoke went up like the smoke of a furnace, and the whole mountain shook violently. 19 As the sound of the trumpet grew louder and louder, Moses spoke and God answered him in the thunder.