"Those who profane it shall be put to death": What is the intent of this? From (Ibid. 15) "Whoever does work on the Sabbath day shall be put to death" we know the punishment. Whence do we derive the exhortation? From (Ibid. 20:10) "And the seventh day is Sabbath to the L–rd your G–d. You shall not perform any labor."