*Works* come into play with the rewards G-d grants to his believers.
I see it like the Military
From Private to General....
From Private to General....
Then go read the Parable of the Talents again. It is not enough to accept G-d's gift of Salvation and sit on it. By that standard, "Privates" get to wail and gnash their teeth.
Further, if you think the Law is done, I have news for you. Few properly understand Paul, both because of the temporal nature of his letters and because of the limits of the Greek language at that time. There was no word for "rabbinic legalism." Hence, he had to work with the language of the time. Please do not think the G-d of Israel would simply drop the Mosaic Law. It defies logic. His principles work without temporal or spatial constraint, whether anybody believes them or not. Replacement theology is long bankrupt as an idea.