Matthew 1:18, 20

This is how the birth of Jesus Christ took place. His mother, Mary, had promised Joseph to be his wife, but while she was still a virgin she became pregnant through the power of the Holy Spirit.

While he was still debating with himself about what to do, he fell asleep and had a supernatural dream. An angel from the Lord appeared to him and said, “Joseph, descendant of David, don’t hesitate to take Mary into your home as your wife, because the power of the Holy Spirit has conceived a child in her womb.