Exodus 19:12
You shall set barriers for the people all around [the mountain], saying, ‘Beware that you do not go up on the mountain or touch its border; whoever touches the mountain must be put to death.
Exodus 10:28
Then Pharaoh said to Moses, “Get away from me! See that you never enter my presence again, for on the day that you see my face again you will die!”
Exodus 19:21
Then the Lord spoke to Moses, “Go down, warn the people, so that they do not break through [the barriers around the mountain] to the Lord to see [Me], and many of them perish [as a result].
Exodus 19:23
Moses said to the Lord, “The people cannot come up to Mount Sinai, because You warned us, saying, ‘Set barriers around the mountain and consecrate it.’”
Exodus 34:12
Watch yourself so that you do not make a covenant (solemn agreement, treaty) with the inhabitants of the land into which you are going, or it will become a [dangerous] trap among you.
Deuteronomy 2:4
and command the people, saying, “You are passing through the territory of your brothers the sons of Esau (the Edomites), who live in Seir; and they will be afraid of you. So be very careful;
Deuteronomy 4:9
“Only pay attention and watch yourselves closely so that you do not forget the things which your eyes have seen and they do not depart from your heart all the days of your life. Make them known to your children and your grandchildren [impressing these things on their mind and penetrating their heart with these truths]—
Joshua 3:4
However, there shall be a distance between you and it of about 2,000 cubits (3,000 ft.) by measurement. Do not come near it,
Hebrews 12:20-21
For they could not bear the command, “If even a wild animal touches the mountain, it will be stoned [to death].”