Exodus 31:13

10 the finely worked garments -- the holy garments for Aaron the priest -- the garments of his sons to minister in the priest`s office,

11 the anointing oil, and the incense of sweet spices for the holy place: according to all that I have commanded you they shall do."

12 Yahweh spoke to Moses, saying,

13 "Speak also to the children of Israel, saying, `Most assuredly you shall keep my Sabbaths: for it is a sign between me and you throughout your generations; that you may know that I am Yahweh who sanctifies you.

14 You shall keep the Sabbath therefore; for it is holy to you. Everyone who profanes it shall surely be put to death; for whoever does any work therein, that soul shall be cut off from among his people.

15 Six days shall work be done, but on the seventh day is a Sabbath of solemn rest, holy to Yahweh. Whoever does any work on the Sabbath day shall surely be put to death.

16 Therefore the children of Israel shall keep the Sabbath, to observe the Sabbath throughout their generations, for a perpetual covenant.