But the very obviously true feature of this account is that she birthed God, and that Her Son was ONLY-Begotten, and she is the Blessed Virgin, and not the FORMER Blessed Virgin...
Scripture also claims that the son of Mary is God ... [John 10:30 NASB] 30 "I and the Father are one."
Scripture also claims that Jesus was the "only begotten" son of God:
[Jhn 1:14, 18 NASB] 14 And the Word became flesh, and dwelt among us, and we saw His glory, glory as of the only begotten from the Father, full of grace and truth. ... 18 No one has seen God at any time; the only begotten God who is in the bosom of the Father, He has explained [Him.]
[Jhn 3:16, 18 NASB] 16 "For God so loved the world, that He gave His only begotten Son, that whoever believes in Him shall not perish, but have eternal life. ... 18 "He who believes in Him is not judged; he who does not believe has been judged already, because he has not believed in the name of the only begotten Son of God.
[1Jo 4:9 NASB] 9 By this the love of God was manifested in us, that God has sent His only begotten Son into the world so that we might live through Him.
... the bible appears to contain no verse that claims Jesus was the "only begotten son of Mary".
The words "Blessed" and "Virgin" do not appear together in any scripture verse, so there is no specific mention of a "Blessed Virgin" in the God breathed word.
The word "virgin" is used in the New Testament to refer to Mary prior to and at the time of Jesus' birth, but none after that:
[Mat 1:23, 25 NASB] 23 "BEHOLD, THE VIRGIN SHALL BE WITH CHILD AND SHALL BEAR A SON, AND THEY SHALL CALL HIS NAME IMMANUEL," which translated means, "GOD WITH US." ... 25 but kept her a virgin until she gave birth to a Son; and he called His name Jesus.
[Luk 1:27, 34 NASB] 27 to a virgin engaged to a man whose name was Joseph, of the descendants of David; and the virgin's name was Mary. ... 34 Mary said to the angel, "How can this be, since I am a virgin?"
The remaining appearances of the word "virgin" in the New Testament do not refer to Mary:
[Act 21:9 NASB] 9 Now this man had four virgin daughters who were prophetesses.
[1Co 7:28, 34, 36-38 NASB] 28 But if you marry, you have not sinned; and if a virgin marries, she has not sinned. Yet such will have trouble in this life, and I am trying to spare you. ... 34 and [his interests] are divided. The woman who is unmarried, and the virgin, is concerned about the things of the Lord, that she may be holy both in body and spirit; but one who is married is concerned about the things of the world, how she may please her husband. ... 36 But if any man thinks that he is acting unbecomingly toward his virgin [daughter,] if she is past her youth, and if it must be so, let him do what he wishes, he does not sin; let her marry. 37 But he who stands firm in his heart, being under no constraint, but has authority over his own will, and has decided this in his own heart, to keep his own virgin [daughter,] he will do well. 38 So then both he who gives his own virgin [daughter] in marriage does well, and he who does not give her in marriage will do better.
[2Co 11:2 NASB] 2 For I am jealous for you with a godly jealousy; for I betrothed you to one husband, so that to Christ I might present you [as] a pure virgin.
The problem with accepting traditions just because they are old is that Arianism and Pelegianism are as old or older than the writings of Jerome that put forth the case for the Perpetual Virginity of Mary. So too is the tradition of the preeminence of the bishop of Rome based on the words on Christ in Matthew 16:18. So we Protestants are forced to greatly subordinate all traditions as mere tools to assist in comprehension, to Sola Scriptura as the ONLY yardstick by which to judge truth against.
Scripture states that Mary was a virgin when Christ was born ... it is silent on her virginity after that.
Scripture states that Joseph and Mary were married.
Scripture states that Jesus had brothers.
Scripture states that Jesus was sinless and that outside of Jesus ALL HAVE SINNED.
Scripture is silent on the birth of Mary, except for her genealogy.
Scripture states that Jesus was assumed into heaven ... it is silent on the death or assumption of Mary.