Shemot 16:3-4

And the Bnei Yisroel said unto them, If only G-d would have made us die by the yad HASHEM in Eretz Mitzrayim, when we sat by the sir habasar (pot of meat), and when we did eat lechem to the full; for ye have brought us forth into this midbar, to kill this kol hakahal with ra'av (hunger). Then said HASHEM unto Moshe, Hineni, I will rain lechem from Shomayim upon you; and HaAm shall go out and gather a certain daily provision, that I may test them, whether they will walk in My torah, or no.