The Virgin Birth of our Lord is not simply sustainable, based on this text, but firmly established. Some 700 years before the Lord’s Birth, Isaiah proclaimed how God would bring it about as a sign to David’s line that He would never forsake His promises!
The Virgin Birth of our Lord Jesus Christ is a core doctrine of Christianity. It stands as an undeniable truth for believers now as it has throughout history.
From Gen. 3:15 through Gen.12:1-3, and continuing through the OT text, God promised a Redeemer from sin. There was only one who met those credentials, Jesus of Nazareth (Matt. 1:16-23).