How are Hester, Dimmesdale, Pearl, and Chillingworth redeemed by the end of the novel ? The Scarlet Letter by Nathaniel Hawthorne

With 's
confession in the third scaffold scene of , the spiritual triangle is
completed for , , and the minister, while the devilish , who attempts to stop Dimmesdale, is
defeated.  Rather than dying for others' sins as Christ did, Dimmesdale dies for his; however,
in so doing, like a Christ, he does ask God's forgiveness for Chillingworth's sin ["forgive
them Father....], and he allows Pearl to become fully human as she kisses his lips, then weeps
in true human compassion. 

This kiss of Pearl is highly symbolic,
for hitherto Pearl has washed away Dimmesdale's kiss at the brook because the minister "was
not true," she now returns her father's kiss, symbolizing her acceptance and
forgiveness.  Moreover, this action of Pearl transforms her from a "sprite" and
"imp" into a human being who sheds tears for the first time in the narrative.  That
she is no longer a symbol of Hester's and Dimmesdale's sin is evinced in Hawthorne's narration,
"A spell was broken."

For her sin of adultery, Hester has already
been redeemed by her full admission of the sin (she embroiders a brillant A
and performs good deads). Still, Hester's sin of having allowed Roger Chillingworth to
"violate the sanctity of the human heart"  has, at last, been revealed so that she,
too, can "be true" as Hawthorne urges in his statement of theme in the Conclusion. 
And, so, she is finally truly redeemed.

After the final scaffold scene,
Chillingworth

...withered up, shrivelled away, and almost
vanished from mortal sight, like an uprooted weed that lies wilting in the sun. 

If Chillingworth is redeemed at all, it is in finding some humanity
in himself by bequeathing his property, both in England and in Massachusetts, to Pearl. Thus,
his hatred is converted to love, expelling his sin, just as sin is expelled in Dimmesdale,
Hester, and Pearl as the incarnation of her parents' sin.