Exodus 31:13-15

New Century Version

¹³ “Tell the Israelites, ‘You must keep the rules about my Sabbaths, because they will be a sign between you and me from now on. In this way you will know that I, the Lord, make you holy.

¹⁴ “‘Make the Sabbath a holy day. If anyone treats the Sabbath like any other day, that person must be put to death; anyone who works on the Sabbath day must be cut off from his people. ¹⁵ There are six days for working, but the seventh day is a day of rest, a day holy for the Lord. Anyone who works during the Sabbath day must be put to death.