Matthew 1:24-25 – “he took her as his wife, but had no marital relations with her until she had borne a son” (NRSV-CE)
It is well-known by virtually everyone except for a select group of Protestants and a certain crazy liberal professor I had of New Testament one year that the Greek word heos is by no means guaranteeing of certainty when an event will come to be fulfilled.
John Calvin writes regarding the passage:
25. And knew her not This passage afforded the pretext for great disturbances, which were introduced into the Church, at a former period, by Helvidius. The inference he drew from it was, that Mary remained a virgin no longer than till her first birth, and that afterwards she had other children by her husband. Jerome, on the other hand, earnestly and copiously defended Mary’s perpetual virginity. Let us rest satisfied with this, that no just and well-grounded inference can be drawn from these words of the Evangelist, as to what took place after the birth of Christ. He is called first-born; but it is for the sole purpose of informing us that he was born of a virgin.  It is said that Joseph knew her not till she had brought forth her first-born son: but this is limited to that very time. What took place afterwards, the historian does not inform us. Such is well known to have been the practice of the inspired writers. Certainly, no man will ever raise a question on this subject, except from curiosity; and no man will obstinately keep up the argument, except from an extreme fondness for disputation.
Yet many a fundamentalist I have encountered on YouTube have especially made this text a triumphalist attack on the Church’s doctrine of the Ever-Virginity of Mary. This is, as Calvin has written, because all they have is an “extreme fondness for disputation”. Though I note that if these people do want to keep up such swipes on the Church’s official teaching on the doctrine of the Ever-Virginity of Mary, I point out the following texts:
Daniel 7:13-14: I saw one like a human being
coming with the clouds of heaven.
And he came to the Ancient One
and was presented before him.
14 To him was given dominion
and glory and kingship,
that all peoples, nations, and languages
should serve him.
His dominion is an everlasting dominion
that shall not pass away,
and his kingship is one
that shall never be destroyed.
Luke 1:32-33: He will be great, and will be called the Son of the Most High, and the Lord God will give to him the throne of his ancestor David. 33 He will reign over the house of Jacob forever, and of his kingdom there will be no end.”
1 Corinthians 15:28: When all things are subjected to him, then the Son himself will also be subjected to the one who put all things in subjection under him, so that God may be all in all.
Psalm 110:1: The Lord says to my lord,
“Sit at my right hand
until I make your enemies your footstool.”
In utter hatred for the Son, some demented minds have in fact twisted and deliberately distorted the meanings of these verses to contradict that his kingdom shall have no end. But that is certainly not what these texts state as all. So by belligerently putting themselves against the Church’s teachings of the Ever-Virginity of Mary by distorting with complete negligence Matthew 1:24-25, they also attack the Lord who bought them their salvation.
What is a heretic? Ironically, a heretic is someone who has an “extreme fondness for disputation”.