'Righteous' in the Bible

but concerning the Son, "Your throne, O God, [is] {forever and ever}, and the scepter of righteous [is the] scepter of your kingdom.

But my righteous one will live by faith, and if he shrinks back, my soul is not well pleased with him."

By faith Abel offered to God a greater sacrifice than Cain, by which he was approved that he was righteous, [because] God approved [him] for his gifts, and through it he still speaks, [although he] is dead.

and assembly of the firstborn who are enrolled in heaven, and to God the judge of all, and to the spirits of righteous [people] made perfect,