'Complain' in the Bible

"Therefore, I will not refrain my mouth; I will speak in the anguish of my spirit; I will complain in the bitterness of my soul.

"I am weary of my life; I will complain without restraint; I will speak in the bitterness of my soul.

Those who stray morally will gain understanding; those who complain will acquire insight.

Why do you complain about your injuries, that your pain is incurable? I have done all this to you because your wickedness is so great and your sin is so much.

Why should any living person complain when punished for his sins?