Doctrine: Mary is ever Virgin, therefore:
Correct readings of Scripture among the many readings a person could find:
- ‘adelphos’ refers to “near Kin”, not exclusively blood sibling, and in the case of Jesus it is not referring at all to blood siblings.
- ‘heos’ is indicating only pre-birth behavior of Mary and Joseph, and has no inference about postpartum activity.
“Dogma” (“doctrine”) was the first statement, not an invention “Mary is ever Virgin”.
Then the theologian (faithful) searches through his possible interpretations to find that one does indeed support the inspired (by the Holy Spirit) teaching of the Church, and items 1 & 2 are asserted.
1 & 2 are not dogma - they are the choice of a faithful theologian.
Thomas Aquinas, in the last words attributed to him, showed how a person “bends his knee to the Church” and to Christ, whose body is the Church inspired and animated by his Holy Spirit
If in this world there be any knowledge of this sacrament stronger than that of faith, I wish now to use it in affirming that I firmly believe and know as certain that Jesus Christ, True God and True Man, Son of God and Son of the Virgin Mary, is in this Sacrament. I receive Thee, the price of my redemption, for Whose love I have watched, studied and laboured. Thee have I preached; Thee have I taught. Never have I said anything against Thee: if anything was not well said, that is to be attributed to my ignorance. Neither do I wish to be obstinate in my opinions, but if I have written aught erroneous concerning this sacrament or other matters, I submit all to the judgment and correction of the Holy Roman Church, in whose obedience I now pass from this life.