Êxodo 16:32

32 Moses said, "This is what the Lord has commanded: 'Take an omer of manna and keep it for the generations to come, so they can see the bread I gave you to eat in the wilderness when I brought you out of Egypt.'"

32 And Moses said, This is the order which the Lord has given: Let one omer of it be kept for future generations, so that they may see the bread which I gave you for your food in the waste land, when I took you out from the land of Egypt.