KJV
And thou shalt set bounds unto the people
round about, saying, Take heed to yourselves, [that ye] go [not] up into the
mount, or touch the border of it: whosoever toucheth the mount shall be
surely put to death:
BSB
And you are to set up a boundary for the people around the mountain and tell them, ‘Be careful not to go up on the mountain or touch its base. Whoever touches the mountain shall surely be put to death.