"Many times, Lutherans are challenged with: “Well, where was Lutheranism before Luther?” The implication is that Rome or the Eastern Orthodox have some sort of “corner” on the great church Fathers. But Lutherans have never believed this to be true. The Fathers repeatedly present the same or quite similar approaches to doctrine as the Lutheran Confessions do. Here are some citations from the Fathers that may be of help in dispelling the notion that “Lutheranism” is a johnny-come-lately to the Church scene.
Note, I encourage not merely to read the section I quote but to read the document as a whole. I don't believe at any place I've ignored context, but you should check that nonetheless - and there are a couple listed here that I gleaned from a secondary source (and so didn't read the original in context), but that will be clear in the citation." Pastor Weedon
For on-line discusion of Historic Christianity and Lutheran practices