Blasphemy, clearly contradicted by the scripture as we know Jesus had brothers and sisters.
Read the Scripture closely. I haven't time to explain as I'm on my way out the door, but Fr. Saunders covers it nicely, with the appropriate verses cited. It's worth taking a look at, as the verses Fr. Saunders shares are the ones I'd of shared anyway
.
http://www.ewtn.com/library/answers/brosis.htm
She gave birth to Jesus who was conceived by the Holy Spirit who gave the Divine nature to Jesus, not mary. (I'm not even going to capitalize her name anymore as she isn't important enough to do so).
On this I agree. However, you see it as contradictory to Mary's title as Theotokos or Mother of God. I, however, don't because I don't believe Jesus was two natures in one form. It isn't like the Incarnation of Our Lord is a cheese and tomato sandwich, with the cheese as His human nature and the tomato as His divine nature, and you can pick them apart. Rather, He is the entire tomato.
Lol, apologies for the food references, I'm starving.
Then mary's Mother must have been conceived without Original Sin also, and her Mother before her and so on, back to Eve.
Really? Really? You're going to tell Jesus who He can and cannot save and when? Jesus saved Mary at her birth, decades before Calvary, just as He saves us now, centuries after Calvary.
Many things that Christians believe, of any denomination or persuasion, are not specifically explained in the Bible. That is why we have theology, because the Scriptures can at times be cryptic, contradictory on the surface, etc. The doctrine of the Assumption is based on the historic teaching of the Church down the centuries, the scholastic arguments in favor of it, and interpretations of biblical sources.