>Those should put the word 'virgin' in context. Right? Like where it says that she knew no man (was single). Or where it plainly says that Jesus was conceived by the Holy Spirit...?
Good questions Tom. The concept of Mary having conceived by the holy spirit wasn't solidified as dogma until The Immaculate Conception was solemnly defined as a dogma by Pope Pius IX in his constitution Ineffabilis Deus on 8 December 1854... almost 2000 years after Jesus.
In the original scriptures, Mary is described as having been visited by the Angel Gabriel, and that Mary was "achrantos" or "spotless"... but never defines what it means to be spotless. This created a rift in the church beginning about 1009 AD, where some factions felt that she must have been a virgin and therefore conceived with God, while others pointed out no such evidence exists in the scriptures, which Pope Pius IX was hoping to end once and for all...
"We declare, pronounce and define that the doctrine which holds that the Blessed Virgin Mary, at the first instant of her conception, by a singular privilege and grace of the Omnipotent God, in virtue of the merits of Jesus Christ, the Saviour of mankind, was preserved immaculate from all stain of original sin, has been revealed by God, and therefore should firmly and constantly be believed by all the faithful." —Pope Pius IX, Ineffabilis Deus, December 8, 1854
From the Original Catholic Encyclopedia:
No direct or categorical and stringent proof of the dogma can be brought forward from Scripture. ... The Proto-evangelium [Genesis 3:15], therefore, in the original text contains a direct promise of the Redeemer, and... The salutation of the angel Gabriel — chaire kecharitomene, Hail, full of grace...finds its explanation only in the Immaculate Conception of Mary. But the term kecharitomene (full of grace) serves only as an illustration, not as a proof of the dogma.
The proof of the dogma is that a Pope is defined as infallible, and therefore the Pope's word is canon law. The scriptures never said Mary was a virgin, or that Jesus was conceived of the Holy Spirit, a Pope did.