Lutheranism is the pure and true confession of the one, holy, catholic and apostolic faith. We name this confession “Lutheranism” to hold it in contradistinction from every other confession, but Lutheranism is nothing more, nor anything less, than the one true faith. And all those confessions that, to whatever extent, also contain or exhibit this same one true faith, to that extent, are Church, in spite of their particular confession’s error.
Oh. Well. I’m glad we got that clear. Now all we need to know is (in Sasse’s words) “Was heisst Lutherisch”?