If a man happens to meet a virgin who is not pledged to be married and rapes her and they are discovered,
he shall pay the girl's father fifty shekels of silver. He must marry the girl, for he has violated her. He can never divorce her as long as he lives.
Deuteronomy Chapter 22: Verses 28 - 29
This is how the birth of Jesus Christ came about: His mother Mary was pledged to be married to Joseph, but before they came together, she was found to be with child through the Holy Spirit.
Because Joseph her husband was a righteous man and did not want to expose her to public disgrace, he had in mind to divorce her quietly.
But after he had considered this, an angel of the Lord appeared to him in a dream and said, "Joseph son of David, do not be afraid to take Mary home as your wife, because what is conceived in her is from the Holy Spirit.
Matthew Chapter 1: Verses 18 - 20
"How will this be," Mary asked the angel, "since I am a virgin?"
The angel answered, "The Holy Spirit will come upon you, and the power of the Most High will overshadow you. So the holy one to be born will be called the Son of God.
Luke Chapter 1: Verses 34 - 35