Dear Doctor Sb,
I read it somewhere that the virgin birth of Jesus was a necessity because of the doctrine of ancestral sin, which resulted from Adam and Eve's rebellion in Eden consuming from forbidden tree. This caused hereditary fallen nature of man and ‘original sin’ passed down from Adam to all-time descendants.
Since original sin would also have included Prophet Jesus had he born according to the Law of God in natural way. But that was problematic. So, to elevate him from man, it was necessary to cause his birth without a father to disconnect him from lineage of original sin. That solves the created problem!!!!!