Good friend Miroslav Volf published a fine book a couple of years ago on A Public Faith. The journal Political Theology has released a theme issue on this book, and your servant is among those listed as responding to MV’s work.
The publisher allows authors to post versions of their articles that have not been made ready for print. That is, for the published version, you must go to the journal’s website. But as a starter, I can post my own article here, which I trust I have done correctly in the attached PDF.
You’ll want to consult Miroslav’s spirited (!) response to my article, and the others, to get the full story, of course, as well as consult the book itself. But trust me: I’m right.