Exodus 31:13-15

Wycliffe Bible

¹³ Speak thou to the sons of Israel, and thou shalt say to them, See ye that ye keep my sabbath, for it is a sign betwixt me and you in your generations; that ye know, that I am the Lord, which hallow[eth] you. (Speak thou to the Israelites, and thou shalt say to them, See ye that ye keep my sabbath, for it is a sign between me and you for all generations to come; so that ye know, that I am the Lord, who halloweth you.)

¹⁴ Keep ye my sabbath, for it is holy to you; he that defouleth it, shall die by death (he who defileth it, must be put to death); (yea,) the soul of him, that doeth work in the sabbath, shall perish from the midst of his people.

¹⁵ Six days ye shall do work; in the seventh day is sabbath, the holy rest to the Lord; each man that doeth work in this day shall die. (For six days ye shall do work; but on the seventh day is the sabbath of rest, which is holy to the Lord; any person who doeth work on this day must be put to death.)