Exodus 16:8, 12-13

Also Moses said, “This shall be seen when the LORD gives you meat to eat in the evening, and in the morning bread to the full; for the LORD hears your complaints which you make against Him. And what are we? Your complaints are not against us but against the LORD.”

“I have heard the complaints of the children of Israel. Speak to them, saying, ‘At twilight you shall eat meat, and in the morning you shall be filled with bread. And you shall know that I am the LORD your God.’ ” So it was that quails came up at evening and covered the camp, and in the morning the dew lay all around the camp.