'Righteous' in the Bible

This is the history of the generations of Noah. Noah was a righteous man, blameless among the people of his time. Noah walked with God.

Abraham drew near, and said, "Will you consume the righteous with the wicked?

What if there are fifty righteous within the city? Will you consume and not spare the place for the fifty righteous who are in it?

Be it far from you to do things like that, to kill the righteous with the wicked, so that the righteous should be like the wicked. May that be far from you. Shouldn't the Judge of all the earth do right?"

Yahweh said, "If I find in Sodom fifty righteous within the city, then I will spare all the place for their sake."

What if there will lack five of the fifty righteous? Will you destroy all the city for lack of five?" He said, "I will not destroy it, if I find forty-five there."

Now Abimelech had not come near her. He said, "Lord, will you kill even a righteous nation?

Judah acknowledged them, and said, "She is more righteous than I, because I didn't give her to Shelah, my son." He knew her again no more.