Exodus 16:30

27 And the seventh day came; and some of the people going forth to gather, found none.

28 And the Lord said to Moses: How long will you refuse to keep my commandments, and my law?

29 See that the Lord hath given you the sabbath, and for this reason on the sixth day he giveth you a double provision: let each man stay at home, and let none go forth out of his place the seventh day.

30 And the people kept the sabbath on the seventh day.

31 And the house of Israel called the name thereof Manna: and it was like coriander seed, white, and the taste thereof like to flour with honey.

32 And Moses said: This is the word which the Lord hath commanded: Fill a gomor of it, and let it be kept unto generations to come hereafter; that they may know the bread, wherewith I fed you in the wilderness when you were brought forth out of the land of Egypt.

33 And Moses said to Aaron: Take a vessel, and put manna into it, as much as a gomor can hold; and lay it up before the Lord, to keep unto your generations,