Exodus 31:13-15 Young's Literal Translation Of The Holy Bible (YLT98)

13. `And thou, speak unto the sons of Israel, saying, Only, My sabbaths ye do keep, for it [is] a sign between Me and you, to your generations, to know that I, Jehovah, am sanctifying you;

14. and ye have kept the sabbath, for it [is] holy to you, he who is polluting it is certainly put to death--for any who doeth work in it--that person hath even been cut off from the midst of his people.

15. `Six days is work done, and in the seventh day [is] a sabbath of holy rest to Jehovah; any who doeth work in the sabbath-day is certainly put to death,

Exodus 31