The Red Mass - S4-E4
Continuity mistake: Near the beginning of the show, Josh is talking about baseball while looking at some stapled political papers - the top one is folded back over the second one. As Donna asks "what is it?", the first page is falling free and Josh is only holding the second one, but he had no time to adjust them.
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