Messianic Prophecy: Born Of A Virgin

Is 7:14 "Therefore the Lord Himself will give you a sign: Behold, the virgin shall conceive and bear a Son, and shall call His name Immanuel. Lk 1:34-35 Then Mary said to the angel, "How can this be, since I do not know a man?" And the angel answered and said to her, "The Holy Spirit will come upon you, and the power of the Highest will overshadow you; therefore, also, that Holy One who is to be born will be called the Son of God.