Exodus 16:32; Exodus 16:33

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.’ ”

33 So Moses said to Aaron, “Take a jar and put an omer of manna in it. Then place it before the LORD to be kept for the generations to come.”