Luke 1:35
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.
World English Bible (Public Domain)
In context
Before · Luke 1:33–34
33and he will reign over the house of Jacob forever. There will be no end to his Kingdom.” 34Mary said to the angel, “How can this be, seeing I am a virgin?”
35The 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.