Exodus 16:24-28

And they laid it up till the morning, as Moses bade: and it did not stink, neither was there any worm therein.

And Moses said, Eat that to day; for to day is a sabbath unto the LORD: to day ye shall not find it in the field.

Six days ye shall gather it; but on the seventh day, which is the sabbath, in it there shall be none.

And it came to pass, that there went out some of the people on the seventh day for to gather, and they found none.

And the LORD said unto Moses, How long refuse ye to keep my commandments and my laws?