Exodus 31:14-15 NIV

14 " 'Observe the Sabbath, because it is holy to you. Anyone who desecrates it must be put to death;1 whoever does any work on that day must be cut off from his people.

References for Exodus 31:14

15 For six days, work2 is to be done, but the seventh day is a Sabbath of rest,3 holy to the LORD. Whoever does any work on the Sabbath day must be put to death.

References for Exodus 31:15