'Complain' in the Bible

And it happened, the people were like those who {complain of hardship} {in the hearing} of Yahweh, and Yahweh {became angry}, and the fire of Yahweh burned among them, and it consumed the edge of the camp.

And if their fathers or their brothers complain to us, we will say to them, 'Allow us to have them, because we did not capture a wife for each man in the battle, and because you did not give [them] to them, {or else} you would have been guilty.'"

"Even I will not restrain my mouth; I will speak in my spirit's anguish; I will complain in my inner self's bitterness.

Why do you complain to me? All of you have {rebelled against me}," {declares} Yahweh.

You [will be] in the right, Yahweh, when I complain to you. Even so, let me speak [my] claims with you. Why does [the] way of [the] wicked succeed? All those who deal treacherously with treachery are at ease.

Why should any living person complain about his sin?