Exodus 16:11-15

11Adonai spoke to Moses saying,

12“I have heard the complaining of Bnei-Yisrael. Speak to them saying, ‘At dusk you will eat meat, and in the morning you will be filled with bread. Then you will know that I am Adonai your God.’”

13So when evening fell, quails came up and covered the camp. Moreover, in the morning there was a layer of dew all around the camp.

14When the layer of dew was gone, on the surface of the desert was a thin, flake-like frost, as fine as the frost on the ground.

15When Bnei-Yisrael saw it, they said one to another, “What is it?” For they did not know what it was. Then Moses said to them, “It is the bread that Adonai has given you to eat.