Luke 1:24; Luke 1:34-35

24 Later, his wife Elizabeth became pregnant and didn't go out in public for five months. She said,
34 Mary asked the angel, "How can this be? I've never had sexual intercourse." 35 The angel answered her, "The Holy Spirit will come to you, and the power of the Most High will overshadow you. Therefore, the holy child developing inside you will be called the Son of God.