'Upright' in the Bible

And the voice of the angel of the waters came to my ears, saying, True and upright is your judging, O Holy One, who is and was from all time:

because His judgments are true and righteous. He has judged [convicted and pronounced sentence on] the great prostitute (idolatress) who was corrupting and ruining and poisoning the earth with her adultery (idolatry), and He has imposed the penalty for the blood of His bond-servants on her.”

She has been permitted to dress in fine linen, dazzling white and clean—for the fine linen signifies the righteous acts of the saints [the ethical conduct, personal integrity, moral courage, and godly character of believers].

Let the one who does wrong, still do wrong; and the one who is filthy (vile, impure), still be filthy; and the one who is righteous (just, upright), still be righteous; and the one who is holy, still be holy.”