Exodus 31:13-18

13 "Say to the people of Israel, 'You shall keep my sabbaths, for this is a sign between me and you throughout your generations, that you may know that I, the LORD, sanctify you.
14 You shall keep the sabbath, because it is holy for you; every one who profanes it shall be put to death; whoever does any work on it, that soul shall be cut off from among his people.
15 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.
16 Therefore the people of Israel shall keep the sabbath, observing the sabbath throughout their generations, as a perpetual covenant.
17 It is a sign for ever between me and the people of Israel that in six days the LORD made heaven and earth, and on the seventh day he rested, and was refreshed.'"
18 And he gave to Moses, when he had made an end of speaking with him upon Mount Sinai, the two tables of the testimony, tables of stone, written with the finger of God.
Revised Standard Version of the Bible, copyright 1952 [2nd edition, 1971] by the Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved.