Matthew 1:25 and did not know her till she had brought forth her firstborn Son. And he called His name JESUS.
Again with the misinterpretation of Sacred Scripture. You really should do research before throwing out statements with little or no substance. As I have conversed with you on other threads, this seems to be a pattern for you. You are presenting the very same argument that Helvidius and other heretics used. Did you know this?
Objection to Mary’s virginity arises from the use of the word, heos, in Matthew’s gospel.
Mt 1:25
He (Joseph) had no relations with her until (heos) she bore a son, and he named him Jesus.
The Greek and the Semitic use of the word heos (until or before) does not imply anything about what happens after the time indicated. In this case, there is no necessary implication that Joseph and Mary had sexual contact or other children after Jesus.
Foot note to Matthew 1:25 NAB [25] Until she bore a son: the evangelist is concerned to emphasize that Joseph was not responsible for the conception of Jesus. The Greek word translated “until” does not imply normal marital conduct after Jesus’ birth, nor does it exclude it.
Objection to the perpetual virginity of Mary arises from the use of the word, prototokos, translated “first-born” in Luke’s gospel.
Lk 2:7
(Mary) gave birth to her firstborn son (prototokos). She wrapped him in swaddling clothes and laid him in a manger …
The Greek word prototokos is used of Christ as born of Mary and of Christ’s relationship to His Father (Col 1:25). As the word does not imply other children of God the Father, neither does it imply other children of Mary. The term “first-born” was a legal term under the Mosaic Law (Ex 6:14) referring to the first male child born to Jewish parents regardless of any other children following or not. Hence when Jesus is called the “first-born” of Mary it does not mean that there were second or third-born children.
****Footnotes from the Douay Rheims 25 “Till she brought forth her firstborn son”… From these words Helvidius and other heretics most impiously inferred that the blessed Virgin Mary had other children besides Christ; but St. Jerome shews, by divers examples, that this expression of the Evangelist was a manner of speaking usual among the Hebrews, to denote by the word until, only what is done, without any regard to the future. Thus it is said, Genesis 8. 6 and 7, that Noe sent forth a raven, which went forth, and did not return till the waters were dried up on the earth. That is, did not return any more. Also Isaias 46. 4, God says: I am till you grow old. Who dare infer that God should then cease to be: Also in the first book of Machabees 5. 54, And they went up to mount Sion with joy and gladness, and offered holocausts, because not one of them was slain till they had returned in peace. That is, not one was slain before or after they had returned. God saith to his divine Son: Sit on my right hand till I make thy enemies thy footstool. Shall he sit no longer after his enemies are subdued? Yea and for all eternity. St. Jerome also proves by Scripture examples, that an only begotten son, was also called firstborn, or first begotten: because according to the law, the firstborn males were to be consecrated to God; Sanctify unto me, saith the Lord, every firstborn that openeth the womb among the children of Israel, etc. Ex. 13. 2. ****