How does Tom try to avoid fulfilling his end of the bargain?

After taking the money Old Scratch provides to set up as a usurer in Boston, becoming popular with adventurers, speculators, and merchants looking to borrow money to begin their ventures. He loans to them and then soaks them dry with his interests rates, and builds with his wealth a lavish house for himself (but doesn't finish or furnish it, since he's still his stingy old self). As he grows older, though, he worries that the bargain he made with Old Scratch will result in being damned in the afterlife, so he becomes a religious zealot, attending church and praying to get back in the good graces of God.