Exodus 16:11-15

11And the Lord spoke to Moses, saying,

12“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.’ ”

13So it was that quails came up at evening and covered the camp, and in the morning the dew lay all around the camp.

14And when the layer of dew lifted, there, on the surface of the wilderness, was a small round substance, as fine as frost on the ground.

15So when the children of Israel saw it, they said to one another, “What is it?” For they did not know what it was. And Moses said to them, “This is the bread which the Lord has given you to eat.