I have seen it stated elsewhere that Lutherans confess Mary as "Mother of God" but I would like to know (1) if this is really true officially and (2) if its in the Book of Concord and where or (3) is it just some Lutheran taking advantage that in some early writing of Luther outside the Book of Concord he continued to use this language similar to how in the 95 Thesies he still believed in the papacy?