Pastors, preachers, priests are Lobbyists for God, or what they think God expects of us, and that is not a good thing. If they truly understood the teachings of Christ, they would tend to their own flocks and not covet other flocks. "Render unto God, render unto Caesar" is very clear.
The separation of church and state was inferred even then....
I can remember the sunday "blue" laws back in the 50's and 60's...
Blue law - Wikipedia, the free encyclopedia
I can't say that any of those laws actually hurt anyone, or helped anyone, they were more an attempt to control morals than anything else, and surely we know by now that you cannot legislate morality...