Exodus 19:12

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!

tn The verb is a Hiphil perfect (“make borders”) with vav (ו) consecutive, following the sequence of instructions.

tn The Niphal imperative (“guard yourselves, take heed to yourselves”) is followed by two infinitives construct that provide the description of what is to be avoided – going up or touching the mountain.