Exodus 19:12-19

12You shall set bounds for the people all around, saying, ‘1Beware that you do not go up on the mountain or touch the border of it; 2whoever touches the mountain shall surely be put to death. 13No hand shall touch him, but 3he shall surely be stoned or 4shot through; whether beast or man, he shall not live.’ When the ram’s horn sounds a long blast, they shall come up to 5the mountain.” 14So Moses went down from the mountain to the people and consecrated the people, and they washed their garments. 15He said to the people, “Be ready for the third day; do not go near a woman.”

166So it came about on the third day, when it was morning, that there were 7thunder and lightning flashes and a thick cloud upon the mountain and a very loud trumpet sound, so that all the people who were in the camp trembled. 17And Moses brought the people out of the camp to meet God, and they stood at the 8foot of the mountain. 189Now Mount Sinai was all in smoke because the Lord descended upon it 10in fire; and its smoke ascended like 11the smoke of a furnace, and 12the whole mountain 13quaked violently. 19When the sound of the trumpet grew louder and louder, Moses spoke and 14God answered him with 15thunder.