Exodus 16:31-36

³¹The house of Israel named it manna, and it was like coriander seed, white, and its taste was like wafers with honey. ³²Then Moses said, “This is what the Lord has commanded, ‘Let an omerful of it be kept throughout your generations, that they may see the bread that I fed you in the wilderness, when I brought you out of the land of Egypt.’” ³³Moses said to Aaron, “Take a jar and put an omerful of manna in it, and place it before the Lord to be kept throughout your generations.” ³⁴As the Lord commanded Moses, so Aaron placed it before the Testimony, to be kept. ³⁵The sons of Israel ate the manna forty years, until they came to an inhabited land; they ate the manna until they came to the border of the land of Canaan. ³⁶(Now an omer is a tenth of an ephah.)