And behold, you will conceive in your womb and bear a son, and you shall name Him Jesus. 32“He will be great and will be called the Son of the Most High; and the Lord God will give Him the throne of His father David; 33and He will reign over the house of Jacob forever, and His kingdom will have no end.†34Mary said to the angel, “How can this be, since I am a virgin?†35The angel answered and said to her, “The Holy Spirit will come upon you, and the power of the Most High will overshadow you; and for that reason the holy Child shall be called the Son of God. Luke 1:31-35 NASB
I think He's got it covered.