Exodus 20:9-11

On six days do all your work: But the seventh day is a Sabbath to the Lord your God; on that day you are to do no work, you or your son or your daughter, your man-servant or your woman-servant, your cattle or the man from a strange country who is living among you: For in six days the Lord made heaven and earth, and the sea, and everything in them, and he took his rest on the seventh day: for this reason the Lord has given his blessing to the seventh day and made it holy.