A timely quote…
"Because of the confessional position of the Lutheran Church, there is no reason why Lutherans should not still be Lutheran. Espousing the catholic and apostolic faith with Christ as center and Scripture as source, Lutherans are part of the one, holy, catholic and apostolic church. Therefore, they do not have to ask whether they should be part of a church body with a name other than Lutheran. They do, of course, need to be concerned about the barriers that divide Christians from each other and must listen to other Christians for what the Holy Spirit may have to say through them. But they do not need to be concerned, as some other Christians have insisted they should be concerned, that they are somehow not the true church of Christ."
— A. C. Piepkorn, The Sacred Scriptures and the Lutheran Confessions, pp. 195, 196. HT: Weedon.