Exodus 31:14
King James Version
“Ye shall keep the sabbath therefore; for it holy unto you: every one that defileth it shall surely be put to death: for whosoever doeth work therein, that soul shall be cut off from among his people.”
Context
11And the anointing oil, and sweet incense for the holy according to all that I have commanded thee shall they do.
12And the LORD spake unto Moses, saying,
13Speak thou also unto the children of Israel, saying, Verily my sabbaths ye shall keep: for it is a sign between me and you throughout your generations; that ye may know that I the LORD that doth sanctify you.
14Ye shall keep the sabbath therefore; for it holy unto you: every one that defileth it shall surely be put to death: for whosoever doeth work therein, that soul shall be cut off from among his people.
15Six days may work be done; but in the seventh is the sabbath of rest, holy to the LORD: whosoever doeth work in the sabbath day, he shall surely be put to death.
16Wherefore the children of Israel shall keep the sabbath, to observe the sabbath throughout their generations, a perpetual covenant.
17It a sign between me and the children of Israel for ever: for six days the LORD made heaven and earth, and on the seventh day he rested, and was refreshed.