You can't debate a religion on what it says. Debating specific interpretations of scripture are what believers have been doing for thousands of years. You can only debate a religion on what it does. What are it's effects? How do it's believers behave? How do they treat believers versus non-believers? How does the religion control it's believers? What do its fundamentalists want, and how does what they want ripple out into even the most progressive sects? What qualities of the religion are inextricable?
Hell, asking what a religion says about property or labor relations usually gets you most of the way there, and the rest of the distance is covered by asking what it says about women.
The purpose of what a system is what it does
