Exodus 16:11-15
(11) And the LORD spake unto Moses, saying,
(12) I have heard the murmurings of the children of Israel: speak unto them, saying, At even ye shall eat flesh, and in the morning ye shall be filled with bread; and ye shall know that I am the LORD your God.
(13) And it came to pass, that at even the quails came up, and covered the camp: and in the morning the dew lay round about the host.
(14) And when the dew that lay was gone up, behold, upon the face of the wilderness there lay a small round thing, as small as the hoar frost on the ground.
(15) And when the children of Israel saw it, they said one to another, It is manna: for they wist not what it was. And Moses said unto them, This is the bread which the LORD hath given you to eat.