"Luther and Calvin are mere men, and they were still processing the Reformation of the Church. At the time they were more concerned with primary doctrines like justification and salvation.The perpetual virginity is not necessary from the text, but it a while before the Reformation got around to it."
Fair answer; my understanding has always been that Protestantism has with varying speed at various times over the past 500 years rejected much of what The Church dogmatized in the 7 Ecumenical Councils. It is for this reason, primarily, that neither Orthodoxy nor the Latin Church consider Protestant assemblies strictly speaking to be true churches, except perhaps for some Lutherans and some Orthodox Churches argue that Anglicanism, at least at one time, qualified.
What other canons of the Ecumenical Councils of The Church do Protestants reject and who decided to reject them?
For what it's worth, we don't study the ecumenical councils....except perhaps in church history classes. It's sort of like, "Such and such came about because of the XYZ Council in 472 AD."
And then the test question is, "In what year did the XYZ council, blah, blah, blah...."
That's the extent of it really. Sort of like a Jeopardy Question or Trivial Pursuits.
It's an interesting question, though.
It probably dates from the Reformation itself. It seems everything was set to the side and it all had to pass through the test of scripture. What came through would be accepted. What failed that test was fit to be burned.
And rightfully so. I am a sola scriptura Christian. It is that which we can know has been God-breathed.