"Some scholars say Paul doesn’t specify a Virgin Birth because there wasn’t one; others say his words imply Jesus did not have an earthly father."Faith is the solution as usual.
Faith knows that God can and God did create the human body for His Son Jesus in the womb of Mary who at that time was a virgin.
Faith is the gift of God and not of human understanding or origin.
But with too many Arminians and Liberals in the churches these doubts about faith known truths are replaced by human speculations. That's how you get evolution, salvation by works and impotent sin.