What does Reverend Hale do that brings “hope” to the prisoners at the beginning of Act 4? "There is a prodigious stench in this place."

"He is gaunt, frightened, and sweating in his greatcoat."

"He would not answer aye or nay to his indictment; for if he denied the charge they'd hang him surely."

"Why, you should rejoice to say it if your soul is truly purged for any love for Hell!"

"Is there no good penitence but it be public?"