Charles Ellicott Commentary Numbers 14:2

"And all the children of Israel murmured against Moses and against Aaron: and the whole congregation said unto them, Would that we had died in the land of Egypt! or would that we had died in this wilderness!" — Numbers 14:2 (ASV)

And all the children of Israel murmured— When the people murmured similarly in the wilderness of Sin (Exodus 16:2–3) against Moses and Aaron because they had brought them out into the wilderness, Moses assured them that in the evening they would know that it was Jehovah Himself who had brought them out from the land of Egypt (Exodus 16:6, Numbers 14:6). On the present occasion, their murmuring was not against Moses and Aaron only, but they openly rebelled against Jehovah Himself, to whom they ascribed, as a reproach, their exodus from the land of Egypt.