On the morning of the third day there were thunders and lightnings... so that all the people who were in the camp trembled.
What did Moses do immediately after this incident?
He went down from the mountain
He brought the people out of the camp to meet God
He went up to meet God
He called the elders of the people to receive the commandment
Correct answer is B
This is described in Exodus 19:16-20 (RSV), where it says,
"16 On the morning of the third day there were thunders and lightnings, and a thick cloud upon the mountain, and a very loud trumpet blast, so that all the people who were in the camp trembled. 17 Then Moses brought the people out of the camp to meet God; and they took their stand at the foot of the mountain. 18 And Mount Sinai was wrapped in smoke, because the Lord descended upon it in fire; and the smoke of it went up like the smoke of a kiln, and the whole mountain quaked greatly. 19 And as the sound of the trumpet grew louder and louder, Moses spoke, and God answered him in thunder. 20 And the Lord came down upon Mount Sinai, to the top of the mountain; and the Lord called Moses to the top of the mountain, and Moses went up. "