Exodus 19:12-13

12But you shall set boundaries 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 certainly be put to death.

13No hand shall touch him, but 3he shall certainly be stoned or 4shot through; whether animal or person, the violator shall not live.’ When the ram’s horn sounds a long blast, they shall come up to 5the mountain.”