Exodus 16:4-8

Then the LORD said to Moses, “Behold, I will rain bread from heaven for you. And the people shall go out and gather a certain quota every day, that I may test them, whether they will walk in My law or not. And it shall be on the sixth day that they shall prepare what they bring in, and it shall be twice as much as they gather daily.” Then Moses and Aaron said to all the children of Israel, “At evening you shall know that the LORD has brought you out of the land of Egypt. And in the morning you shall see the glory of the LORD; for He hears your complaints against the LORD. But what are we, that you complain against us?” Also Moses said, “This shall be seen when the LORD gives you meat to eat in the evening, and in the morning bread to the full; for the LORD hears your complaints which you make against Him. And what are we? Your complaints are not against us but against the LORD.”