'Uprightness' in the Bible

Then Solomon said, “You have shown Your servant David my father great lovingkindness, because he walked before You in faithfulness and righteousness and with uprightness of heart toward You; and You have kept for him this great lovingkindness, in that You have given him a son to sit on his throne, as it is today.

then hear from heaven and act and judge Your servants, condemning the wicked by bringing his guilt on his own head, and justifying the righteous by rewarding him in accordance with his righteousness.

As for you, if you walk (live your life) before Me, as David your father walked, in integrity of heart and in uprightness, acting in accordance with everything that I have commanded you, and will keep My statutes and My precepts,