How does a specific death scene help illuminate the meaning of The Scarlet Letter?

All is revealed and redeemed in Dimmesdale's final act of confession upon the scaffold. He reveals the scarlet letter that he has imprinted in his own flesh, finally shedding light on his own sin, on his own shame that he could hardly bear. In doing so, he sets Hester and Pearl free, and he dies knowing that morality will live in the body of his young child.