Yeah, it took the Christian Church a thousand years, well 787 years, to come up with this in one of the major re-writings/editings of the Bible, done to make it fit the standards and opinions of the hierarchy of the time. Not for the first time and not for the last either!
Not quite true, Matt. Origen, who died circa 250 AD, is thought to be the first person to have 'coined' the term, and it was used by several Church Fathers in the 4th century AD and beyond.
It was first formally affirmed at the Council of Ephesus in 431. Interestingly, its proper theological meaning is "the one who gives birth to the one who is God", so even the modern Orthodox understanding is somewhat skewed, since it originally had nothing to do with 'ever-virgin' status.
Furthermore, the actual term appears nowhere in the Bible - so can't have had anything to do with your so-called 'major re-writings/editings of the Bible'.