'Righteous' in the Bible

Which one of the prophets did your fathers not persecute? They killed those who proclaimed beforehand the coming of the Righteous One, whose betrayers and murderers you have now become;

And he said, ‘The God of our fathers has appointed you to know His will, [and to progressively understand His plan with clarity and power] and to see the Righteous One [Jesus Christ, the Messiah] and to hear a message from His [own] mouth.

having [the same] hope in God which these men cherish themselves, that there shall certainly be a resurrection of [the dead], both of the righteous and of the wicked.