1 Thus the heavens and the earth were completed in all their vast array.
2 By the seventh day God had finished the work he had been doing; so on the seventh day he rested (ceased) from all his work. 3 And God blessed the seventh day and made it holy, because on it he rested from all the work of creating that he had done.
12 Then the LORD said to Moses, 13 "Say to the Israelites, 'You must observe my Sabbaths. This will be a sign between me and you for the generations to come, so you may know that I am the LORD, who makes you holy. [a]
14 " 'Observe the Sabbath, because it is holy to you. Anyone who desecrates it must be put to death; whoever does any work on that day must be cut off from his people. 15 For six days, work is to be done, but the seventh day is a Sabbath of rest, holy to the LORD. Whoever does any work on the Sabbath day must be put to death. 16 The Israelites are to observe the Sabbath, celebrating it for the generations to come as a lasting covenant. 17 It will be a sign between me and the Israelites forever, for in six days the LORD made the heavens and the earth, and on the seventh day he abstained from work and rested.' "
Exodus 31:13 Or who sanctifies you ; or who sets you apart as holy
I've been reading up on Sabbath rest for the last year, on and off, and there is much great reading on it. As for practice, I completely suck at it. I believe it will soon be a cuss word in our culture. It is far more than a "day off," especially because the average American uses their day off to catch up on work around the house or other work related activity. Rest? Nope. Different kind of work? Yep. "he rested from ALL the work of creating that he had done." (emphasis mine, maybe then I'll find it)