Exodus 31:14 Ye shall keep the sabbath therefore; for it is holy unto you: every one that defileth it shall surely be put to death: for whosoever doeth any work therein, that soul shall be cut off from among his people. 12 I MC VC

Exodus 31:15 Six days may work be done; but in the seventh is the sabbath of rest, holy to the Lord: whosoever doeth any work in the sabbath day, he shall surely be put to death. 12 I MC VC

Exodus 35:2 Six days shall work be done, but on the seventh day there shall be to you an holy day, a sabbath of rest to the Lord: whosoever doeth work therein shall be put to death. 10 I MC VC