Exodus 31:12-17

Then the LORD said to Moses, “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. “ ‘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. 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. The Israelites must remember the Sabbath day as an agreement between them and me that will continue from now on. The Sabbath day will be a sign between me and the Israelites forever, because in six days I, the LORD, made the sky and the earth. On the seventh day I did not work; I rested.’ ”