Shemot 31:14-16

Orthodox Jewish Bible

¹⁴ Ye shall be shomer Shabbos therefore; for it is kodesh unto you; every one that is chillul Shabbos (desecrates Shabbos) shall surely be put to death; for whosoever doeth any work therein, that nefesh shall be cut off from among his people.

¹⁵ Sheshet yamim may work be done; but in the Yom HaShevi’i is Shabbos HaShabbaton, kodesh to Hashem; whosoever doeth any work in the Yom HaShabbos, he shall surely be put to death.

¹⁶ Wherefore the Bnei Yisroel shall be shomer Shabbos, to observe Shabbos throughout their dorot, for a brit olam.