Actually, Amos, you have stumbled onto what I believe is the truth of the matter regarding the "immaculate conception" spoken of in the Bible. Mary's virginity was not a physical matter at all, it was a spiritual condition. Besides, there is nothing non-immaculate about normal sexual conception...but what about the consciousness behind it? That is the crucial matter. One can have immaculate intentions or one can have compromised intentions, and on a spiritual level that is the vital matter, regardless of the physical circumstances.

- LH