Luke 1:34 in the King James Version
Then said Mary unto the angel, How shall this be, seeing I know not a man?
Context
33 and he will reign over the house of Jacob forever. There will be no end to his Kingdom.”
34 Mary said to the angel, “How can this be, seeing I am a virgin?”
35 The angel answered her, “The Holy Spirit will come on you, and the power of the Most High will overshadow you. Therefore also the holy one who is born from you will be called the Son of God.