Parris a reverend of Salem is using his power of being a reverend to get free stuff from the towns folk. Parris complains about not getting enough fire wood for his house. He got a free house an still being selfish about supplies.
avidly- Having an ardent desire or unbounded craving; greedy
This relates to the book because people are willing to accuse the innocent of being witches just for there land example like Putnam, Parris, and Corey Giles are talking about the land and being greedy about it.