[redgolum]

The perpetual virginity of Mary has historically been a Lutheran view, but it wasn't ever a "dogma", since the Bible is a bit ambiguous about it (hence why we are having this discussion).

While many Lutheran bodies don't touch on Mary that much, we still have a feast day for the birth of Mary (just recently) and treat her with a lot of respect as the most blessed woman in history.

After Vatican I in 1870, most Lutheran churches began to tone down any overt mention of Mary in the liturgy.

[UsnDadof8]

since the Bible is a bit ambiguous about it (hence why we are having this discussion).

The Bible is not ambiguous about it. The Bible even names some of his brothers.