Why scripture alone? Where the Bible say scripture alone?
It does day perpetual virgin
Isa 7:14 a son singular
Matt 1:23 Same
Lk 1: 34 Then said Mary unto the angel, How shall this be, seeing I know not a man? No sex period
brothers of Jesus does not mean children of Mary could be cousins as lot and Abraham uncle and nephew are called brother in scripture
And the twelve sons of Jacob are all brothers but have four different mothers
Isa 7:14 Therefore the Lord himself shall give you a sign; Behold, a virgin shall conceive, and bear a son, and shall call his name Immanuel.
Mat 1:23 Behold, a virgin shall be with child, and shall bring forth a son, and they shall call his name Emmanuel, which being interpreted is, God with us.
Mat 1:24 Then Joseph being raised from sleep did as the angel of the Lord had bidden him, and took unto him his wife:
Mat 1:25 And knew her not till she had brought forth her firstborn son
: and he called his name JESUS.
Luke 1:34 Then said Mary unto the angel, How shall this be, seeing I know not a man?
What else is there other than the word of God for us to learn from. Nowhere in those verses you gave say anything about Mary being a perpetual virgin. Mary was a virgin when she was conceived by the Holy Spirit as that is agreed upon by all and Joseph did marry her during her pregnancy, but abstained from the yichud until Jesus was born.
We have shown you with scripture Mary and Joseph had other children as Joseph knew her not until Jesus was born as there after the yichud was performed which is Jewish tradition. You blow off the scriptures believing only that of mans traditional teachings that are taught in many denominations and non-denominations that Mary remained a virgin all her life, but is nowhere found in the word of God. Catholics have made Mary nothing more than an idol made by hands to be bowed down to, prayed to and worshipped as she is lifted up higher than Christ Jesus. We have been through this many times with you in the other thread. What is your purpose in starting another thread on this.
2Timothy 2:15 Study to shew thyself approved unto God, a workman that needeth not to be ashamed, rightly dividing the word of truth.
2Timothy 2:16 But shun profane and vain babblings: for they will increase unto more ungodliness.