Exodus 16:33-35

16:33 Moses said to Aaron, “Take a jar and put in it an omer full of manna, and place it before the Lord to be kept for generations to come.” 16:34 Just as the Lord commanded Moses, so Aaron placed it before the Testimony for safekeeping.

16:35 Now the Israelites ate manna forty years, until they came to a land that was inhabited; they ate manna until they came to the border of the land of Canaan.