Luke 1:31-35 CSB
Now listen: You will conceive and give birth to a son, and you will name him Jesus. 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. He will reign over the house of Jacob forever, and his kingdom will have no end.”
Mary asked the angel, “How can this be, since I have not had sexual relations with a man?”
The angel replied to her, “The Holy Spirit will come upon you, and the power of the Most High will overshadow you. Therefore, the holy one to be born will be called the Son of God.
CSB: Christian Standard Bible