Exodus 19:10-12

Lexham English Bible

¹⁰ And Yahweh said to Moses, “Go to the people and consecrate them today and tomorrow. They must wash their clothes, ¹¹ and they must be prepared for the third day, because on the third day, Yahweh will go down on Mount Sinai before the eyes of all the people. ¹² And you must set limits for the people all around, saying, ‘Guard yourselves against^[a] going up to the mountain and touching its edge. Anyone touching the mountain will certainly be put to death.