Exodus 31:13

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

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

12 And Jehovah spake unto Moses, saying,

13 Speak thou also unto the children of Israel, saying, Verily ye shall keep my sabbaths: for it is a sign between me and you throughout your generations; that ye may know that I am Jehovah who sanctifieth you.

14 Ye shall keep the sabbath therefore; for it is holy unto you: every one that profaneth it shall surely be put to death; for whosoever doeth 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 Jehovah: whosoever doeth any work on the sabbath day, he shall surely be put to death.

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