Exodus 31:13-15

New Revised Standard Version, Anglicised Catholic Edition

¹³ You yourself are to speak to the Israelites: ‘You shall keep my sabbaths, for this is a sign between me and you throughout your generations, given in order that you may know that I, the Lord, sanctify you. ¹⁴ You shall keep the sabbath, because it is holy for you; everyone who profanes it shall be put to death; whoever does any work on it shall be cut off from among the people. ¹⁵ For six days shall work be done, but the seventh day is a sabbath of solemn rest, holy to the Lord; whoever does any work on the sabbath day shall be put to death.