Shemot 31:15-17

Orthodox Jewish Bible

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.

¹⁷ It is an ot between Me and the Bnei Yisroel l’olam; for in sheshet yamim Hashem made Shomayim and HaAretz, and on Yom HaShevi’i He rested (shavat, ceased working), and was refreshed.