Today's reading of Advent is Matthew Chapter 1 verse 20, where it states: "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." This is an Angel from God himself to show Joeseph the way that is needed for his plan to work, and that is to stay with Virgin Mary even though she has her son in her womb and Joeseph did not know about the Virgin Birth, at the time. It shows you that God will show you the way, when it is needed.