Then Moses said, "This is the thing which the LORD has commanded: "Fill an omer with it, to be kept for your generations, that they may see the bread with which I fed you in the wilderness, when I brought you out of the land of Egypt."'
Exodus 16:32
Surrounding context
16:31 And the house of Israel called its name Manna. And it was like white coriander seed, and the taste of it was like wafers made with honey.
16:32 Then Moses said, "This is the thing which the LORD has commanded: "Fill an omer with it, to be kept for your generations, that they may see the bread with which I fed you in the wilderness, when I brought you out of the land of Egypt."'
16:33 And Moses said to Aaron, "Take a pot and put an omer of manna in it, and lay it up before the LORD, to be kept for your generations."