[Vegasrugrat]

Not sure what Lutheran branch you are speaking of, but I can say emphatically that the Wisconsin Synod Evang. Lutheran (WELS), definitely does not teach that Mary had no other children or that other siblings were from a previous marriage of Joseph.

They lean towards Jesus having half brothers and sisters conceived by Mary & Joseph. WELS stops short of claiming this as complete truth only because the Bible does not outright state this.

God Bless

[redgolum]

It isn't doctrine, because as you said the Scriptures are silent. But many of the LCMS pastors I knew growing up said that it was likely Mary had no other kids.