Exodus 19:12-13

19:12 You must set boundaries for the people all around, saying, ‘Take heed to yourselves not to go up on the mountain nor touch its edge. Whoever touches the mountain will surely be put to death! 19:13 No hand will touch him – but he will surely be stoned or shot through, whether a beast or a human being; he must not live.’ When the ram’s horn sounds a long blast they may go up on the mountain.”

Exodus 19:21

19:21 The Lord said to Moses, “Go down and solemnly warn the people, lest they force their way through to the Lord to look, and many of them perish.

Leviticus 16:17

16:17 Nobody is to be in the Meeting Tent when he enters to make atonement in the holy place until he goes out, and he has made atonement on his behalf, on behalf of his household, and on behalf of the whole assembly of Israel.

Leviticus 16:1

The Day of Atonement

16:1 The Lord spoke to Moses after the death of Aaron’s two sons when they approached the presence of the Lord and died,

Leviticus 2:5

2:5 If your offering is a grain offering made on the griddle, it must be choice wheat flour mixed with olive oil, unleavened.

Hebrews 12:20

12:20 For they could not bear what was commanded: “If even an animal touches the mountain, it must be stoned.”