Exodus 35:2 KJV
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.
Exodus 35:2, King James Version
In context
1 And Moses gathered all the congregation of the children of Israel together, and said unto them, These are the words which the Lord hath commanded, that ye should do them.
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.
3 Ye shall kindle no fire throughout your habitations upon the sabbath day.