'Righteous' in the Bible

The Lord will return his blood on his own head, because he fell upon two men more righteous and better than he and killed them with the sword, while my father David did not know it: Abner the son of Ner, commander of the army of Israel, and Amasa the son of Jether, commander of the army of Judah.

then hear in heaven and act and judge Your servants, condemning the wicked by bringing his way on his own head and justifying the righteous by giving him according to his righteousness.