What important or shocking events happen in chapters 11 and 12 of "The Scarlet Letter"?

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becomes even more
powerful in his sermon.He wants to confess his sin, but only tells the church what a horrible
liar he is and how he punishes himself.The parishioners thank him for begin such a model of
holiness.

That night, Dimmesdale goes to the scaffolding
wherewas...