Vayikra 23:28-30

Orthodox Jewish Bible

²⁸ And ye shall do no work in that same day; for it is Yom Kippurim, to make kapporah for you before Hashem Eloheichem.

²⁹ For whatsoever nefesh it be that shall not be afflicted in that same day, he shall be cut off from among his people.

³⁰ And whatsoever nefesh it be that doeth any work in that same day, that nefesh will I destroy from among his people.