17. And Moses brought forth the people out of the camp to meet with God; and they stood at the nether part of the mount.
18. And mount Sinai was altogether in a smoke, because the LORD descended upon it in fire: and the smoke of it ascended as the smoke of a furnace, and the whole mount trembled greatly.
19. And when the voice of the trumpet sounded long, and grew louder and louder, Moses spoke, and God answered him by a voice.