Exodus 20:9-11

Six days you shall labor and do all your work, but the seventh day is a Sabbath [a day of rest dedicated] to the LORD your God; on that day you shall not do any work, you or your son, or your daughter, or your male servant, or your female servant, or your livestock or the temporary resident (foreigner) who stays within your [city] gates. For in six days the LORD made the heavens and the earth, the sea and everything that is in them, and He rested (ceased) on the seventh day. That is why the LORD blessed the Sabbath day and made it holy [that is, set it apart for His purposes].