16 On the morning of the third day there was thunder and lightning. A cloud covered the mountain, and a very loud horn sounded. All the people among the tents shook with fear. 17 Then Moses brought the people from among the tents to meet God. They stood at the base of the mountain. 18 Mount Sinai was all in smoke because the Lord came down upon it in fire. Its smoke went up like the smoke of a stove. And the whole mountain shook. 19 The sound of the horn became louder and louder. Moses spoke, and God answered him with thunder. 20 Then the Lord came down upon Mount Sinai, to the top of the mountain. The Lord called Moses to the top of the mountain, and he went up.