'Murmurings' in the Bible

How long shall I bear with this evil assembly, which murmur against me? I have heard the murmurings of the children of Israel, which they murmur against me.

And it shall come to pass, that the man whom I shall choose, his staff shall bud forth; and I will make to cease from before me the murmurings of the children of Israel, that they murmur against you.

And Jehovah said to Moses, Bring Aaron's staff again before the testimony, to be kept as a token for the sons of rebellion, that thou mayest put an end to their murmurings before me, that they may not die.