Exodus 20:8-11

20:8 “Remember the Sabbath day to set it apart as holy. 20:9 For six days you may labor and do all your work, 20:10 but the seventh day is a Sabbath to the Lord your God; on it you shall not do any work, you, or your son, or your daughter, or your male servant, or your female servant, or your cattle, or the resident foreigner who is in your gates. 20:11 For in six days the Lord made the heavens and the earth and the sea and all that is in them, and he rested on the seventh day; therefore the Lord blessed the Sabbath day and set it apart as holy.

Exodus 31:15-16

31:15 Six days work may be done, but on the seventh day is a Sabbath of complete rest, holy to the Lord; anyone who does work on the Sabbath day must surely be put to death. 31:16 The Israelites must keep the Sabbath by observing the Sabbath throughout their generations as a perpetual covenant.

Luke 13:14

13:14 But the president of the synagogue, indignant because Jesus had healed on the Sabbath, said to the crowd, “There are six days on which work should be done! So come and be healed on those days, and not on the Sabbath day.”