'Justified' in the Bible

Yes, I know what you’ve said is true,but how can a person be justified before God?

If I justified myself, mine own mouth would condemn me; were I perfect, he would prove me perverse.

Should not the multitude of words be answered? and should a man full of talk be justified?

Behold now, I have ordered my cause; I know that I shall be justified.

How then can man be justified with God? or how can he be clean that is born of a woman?

Then was kindled the wrath of Elihu the son of Barachel the Buzite, of the kindred of Ram: against Job was his wrath kindled, because he justified himself rather than God.

“Will you really annul My judgment?Will you condemn Me that you may be justified?