Exodus 16:6-10

So Moses and Aaron said to all the sons of Israel, “At evening you will know that the Lord has brought you out of the land of Egypt;

and in the morning you will see the glory of the Lord, for He hears your grumblings against the Lord; and what are we, that you grumble against us?” The Lord Provides Meat

And Moses said, “This will happen when the Lord gives you meat to eat in the evening, and bread to the full in the morning; for the Lord hears your grumblings which you grumble against Him. And what are we? Your grumblings are not against us but against the Lord.”

Then Moses said to Aaron, “Say to all the congregation of the sons of Israel, ‘Come forward before the Lord, for He has heard your grumblings.’ ”

And it came about, as Aaron spoke to the entire congregation of the sons of Israel, that they looked toward the wilderness, and behold, the glory of the Lord appeared in the cloud.