1. IMHO, it is possible for a couple to have had an instance of loving, mutual sharing of intimacies without having children resulting from such specifically mentioned in the Bible (or even have children AT ALL - mentioned in the Bible or not). Perhaps you fundamentally disagree. Why, I know a couple that has no children and yet they specificly told me they "tried for years" (I take that to mean each is not a perpetual virgin). So, I don't agree with your argument that if other children of Mary are not specificly mentioned in the Bible, ergo, Mary was a Perpetual Virgin. Nor does it confirm to me that such an instance of loving, mutual sharing of intimacies within Marriage makes the wife (but not husband) impure - as is given as the reason for the dogma of the Perpetual Virginity of Mary by Catholics and Orthodox.
2. If you want to discuss the CONFESSIONS of the Lutheran Church, you might want to take that to the Lutheran forum. It is well known that Luther and some of the Lutheran Church Fathers embrace the view of the Perpetual Virginity of Mary - at least early in their lives. We all know that. However, was it dogma (the Lutheran Confessions don't make this uniquely Catholic distinctions between various levels of truth; the Confessions are just that - not necessarily dogmas)? As I've explained repeatedly before (to no avail), to see, we must determine two things: Is it specifically taught as something that must be believed? Simply using a common TITLE for Mary or expressing a faith is not the same as declaring dogma - not in ANY denomination. Secondly, how was the view treated? Luther was surrounded by Lutheran pastors, teachers and theologians that did NOT embrace the view of the Perpetual Virginity of Mary. Where they excommunicated for that? Did Luther condemn them as heretics? Was there DIFFERENT pious opinion permitted, even welcomed? Or were they condemned, excommunicated and burned at the stake (in not infrequent style of the RCC in those days)? Several times, I've shared with you that Protestants embrace something we call pious opinion. These are views (perhaps even very passionate ones) that are NEITHER substantiated or denied by Scripture BUT have solid, historic, ECUMENICAL embrace. One is permitted to embrace and teach such (even in a document later made a part of the Book of Concord), but one is not bound to such, one may do as I do and have no opinion on it or one may disagree with it and not embrace it. SCRIPTURE is our rule. We've been all over this, um, how many times?????
Since you'd rather discuss the RCC DOGMA of Mary Had No Sex EVER, then I'd repeat AGAIN my questions to and requests of you (ignored for longer than I can remember, in numerous threads, over many, many months):
1. Please show us how the dogmatic view that Our Lady never once had sex is a STRONGER and OLDER position in the Bible (or even your own single denomination's "tradition") than is the dogmatic position of 49,997 denominations - SILENCE?
2. Please explain from Scripture (or even your own single denomination's own earliest "tradition") how it is that a single, loving, mutual sharing of intimacies within Marriage makes the WIFE impure and defiled (but not the husband) so that if Mary even once shared such, she'd be impure?
3. Please explain why there this obsession on the part of your denomination (to the level of DOGMA) on the "bedroom activities" of this holy couple after Jesus was born? Why is it so very critical to our salvation and to Jesus being our Savior? Why is it that a single instance of mutual, loving, respectful sharing of intimacies say years after Jesus was born would make our salvation moot and Jesus not our Savior; how would it so horribly defile not only Mary but Jesus? Of course, NORMALLY, the "bedroom activities" of a married couple is regarded as private and respected, but here it is shouted, broadcast in the loudest, boldest, possible way, throughout all the world and to all generations as a matter of highest importance to US: "MARY AND JOSEPH HAD MARITAL SEX NOT ONCE!!!" Why?