The episode called "The Sinner", the young pastor Matthew Fordwick is staying with the family, and he's a rediculusly zealous preacher, who scares the family with his fearful sermons. I think the overall funniest part is when the newcomer reverend goes with Zeb to a "harmless" sit in with the Baldwin's, not knowing that their "recipe" is whiskey! And then he becomes drunk of course and goes to his first sermon!
Rev. Fordwick: What do you think of my sermon?
Don't worry Jim-Bob, it will come back to haunt him.