Exodus 16:4, 8

Then said Jehovah unto Moses, Behold, I will rain bread from heaven for you; and the people shall go out and gather a day’s portion every day, that I may prove them, whether they will walk in my law, or not.

And Moses said, This shall be, when Jehovah shall give you in the evening flesh to eat, and in the morning bread to the full; for that Jehovah heareth your murmurings which ye murmur against him: and what are we? your murmurings are not against us, but against Jehovah.