'Unrighteous' in the Bible

And the lord praised the unrighteous steward because he had done prudently. For the sons of this world are, for their own generation, more prudent than the sons of light.

He that is faithful in the least is faithful also in much; and he that is unrighteous in the least is unrighteous also in much.

If therefore ye have not been faithful in the unrighteous mammon, who shall entrust to you the true?