Exodus 31:12-18 - Provision Of Rest From Work
12 And the LORD spake unto Moses, saying, 13 "Speak unto the children of Israel and say, 'In any wise see that ye keep my Sabbath, for it shall be a sign between me and you in your generations for to know, that I the LORD do sanctify you. 14 Keep my Sabbath therefore, that it be a holy thing unto you. He that defileth it, shall be slain therefore. For whosoever worketh therein, the same soul shall be rooted out from among his people. 15 Six days shall men work, but the seventh day is the Sabbath of the holy rest of the LORD: so that whosoever doeth any work in the Sabbath day, shall die for it. 16 Wherefore let the children of Israel keep the Sabbath, that they observe it throughout their generations, that it be an covenant forever. 17 For it shall be a sign between me, and the children of Israel for ever. For in six days the LORD made heaven and earth, and the seventh day he rested and was refreshed.'"
18 And when the LORD had made an end of communing with Moses upon the mount Sinai, he gave him two tables of witness: which were of stone and written with the finger of God.