I want to know the answer to the following question:
Where did the majority of the concepts of Mary's birth show themselves the most ?
All the background I'm provided with is that "Although hymnographers and scholars, like the Emperor Justinian I, were accustomed to call Mary "prepurified" in their poetic and credal statements, the first point of departure for more fully commenting on Nazianzen's meaning occurs in Sophronius of Jerusalem.". Is that enough to answer the question?
Answer: no