These are murmurers and complainers, walking after their lusts (and their mouth speaks proud things), showing respect of persons to gain advantage.

The people were complaining in the ears of the LORD. When the LORD heard it, his anger was kindled; and the LORD's fire burnt among them, and consumed some of the outskirts of the camp.

Abraham complained to Abimelech because of a water well, which Abimelech's servants had violently taken away.

It shall be, when their fathers or their brothers come to complain to us, that we will say to them, 'Grant them graciously to us, because we didn't take wives for each man in battle, neither did you give them to them, otherwise you would now be guilty.'"

"Therefore I will not keep silent. I will speak in the anguish of my spirit. I will complain in the bitterness of my soul.

Why does a living man complain, a man for the punishment of his sins?

I remember God, and I groan. I complain, and my spirit is overwhelmed. Selah.