Take This Sabbath Day - S1-E14
Trivia: The pocket Bible that Karl Malden carries in this episode is the same one he carried in the film "On The Waterfront." Everyone on the set that day came to touch this piece of film history. (Stated on the commentary track.)
Answer: It's in reference to the many televangelists and revival ministers usually associated with the right-wing that have been convicted of tax fraud (Jim Bakker and Tamy Faye being a more famous set). Occasionally, the more unscrupulous ministers have bilked millions from believers all in the name of God.
Nikki