Since this is in the non-Catholic Religions subforum, I hope you donât mind getting a non-Catholic perspective on this question, as it is something that is important beyond the individual church weâre talking about (i.e., all traditional churches maintain that the Theotokos St. Mary was ever-virgin).
In the Old Testament, we see many prophecies that have traditionally been taken to be about Christ, and hence many types of Christ, and also many types of St. Mary. It is an ancient practice to read the Bible in such a way, as we do believe that Christ is to be found throughout, as there is was never a time when He was not. And so, when we sing hymns like
âThe Burning Bushâ, we equate explicitly the burning bush seen by the prophet Moses with the birth of Christ to St. Mary â the fire representing His divinity which âburnedâ (again, metaphorically!) within the womb of St. Mary without consuming or damaging she who carried Him. Similarly, in other songs and hymns, such as
âO Maryâ, the explicit connection is made between St. Maryâs perpetual virginity and the forever-sealed door/gate through which the Lord entered, as prophesied by Ezekiel the prophet in Ezekiel 44:2.
It is in fulfillment of these prophecies and others that the perpetual virginity of the Theotokos is understood on a
spiritual level, which is not to say that the answers you have thus far been given about her consecration to virginity and other points are wrong (theyâre not; as far back as Origen it is written that tradition has been received that St. Mary worshiped in the temple of the virgins after giving birth to Christ; see Origenâs
Homilies on Leviticus), but rather that there is more to it than that. The ever-virginity of the Theotokos confirms to us what God Himself told us through the prophets, centuries before her, that this is how Emmanuel would come to us. So it is with all types, not just the sealed gate, but also with the censer, the rod of Aaron, the vine, etc. These are all types of or references to the Theotokos in different contexts, and our fathers read them as such, thereby confirming the prophecies about the coming of Christ our God.