Exodus 16:12-16

“I have heard the grumbling of the Israelites. Tell them, ‘At twilight you will eat meat, and in the morning you will be filled with bread. Then you will know that I am the LORD your God.’ ” That evening quail came and covered the camp, and in the morning there was a layer of dew around the camp. When the dew was gone, thin flakes like frost on the ground appeared on the desert floor. When the Israelites saw it, they said to each other, “What is it?” For they did not know what it was. Moses said to them, “It is the bread the LORD has given you to eat. This is what the LORD has commanded: ‘Everyone is to gather as much as they need. Take an omer for each person you have in your tent.’ ”