Êxodo 16

11 The Lord spoke to Moses, 12 "I have heard the complaints of the Israelites. Tell them: At twilight you will eat meat, and in the morning you will eat bread until you are full. Then you will know that I am the Lord your God."

13 So at evening quail  * 16:13 Nm 11:9,31; Ps 78:27–28; 105:40 came and covered the camp. In the morning there was a layer of dew all around the camp. 14 When the layer of dew evaporated, there were fine flakes on the desert surface, as fine as frost on the ground. 15 When the Israelites saw it, they asked one another, "What is it? " because they didn’t know what it was.

Moses told them, "It is the bread the Lord has given you to eat.  * 16:15 Ex 16:4; Jn 6:31