Exodus 19:10-13

GOD said to Moses, “Go to the people. For the next two days get these people ready to meet the Holy GOD. Have them scrub their clothes so that on the third day they’ll be fully prepared, because on the third day GOD will come down on Mount Sinai and make his presence known to all the people. Post boundaries for the people all around, telling them, ‘Warning! Don’t climb the mountain. Don’t even touch its edge. Whoever touches the mountain dies—a certain death. And no one is to touch that person, he’s to be stoned. That’s right—stoned. Or shot with arrows, shot to death. Animal or man, whichever—put to death.’ “A long blast from the horn will signal that it’s safe to climb the mountain.”