Exodus 16:25-30

Then Moses said, “Eat that today, for today is a Sabbath to the LORD; today you will not find it in the field. Six days you shall gather it, but on the seventh day, the Sabbath, there will be none.” Now it happened that some of the people went out on the seventh day to gather, but they found none. And the LORD said to Moses, “How long do you refuse to keep My commandments and My laws? See! For the LORD has given you the Sabbath; therefore He gives you on the sixth day bread for two days. Let every man remain in his place; let no man go out of his place on the seventh day.” So the people rested on the seventh day.