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.
She will give birth to a son, and you are to give him the name Jesus,
because he will save his people from their sins.”

 All this took place to fulfill what the Lord had said through the prophet:
“The virgin will be with child and will give birth to a son,
and they will call him Immanuel” —which means, “God with us.”

 When Joseph woke up, he did what the angel of the Lord had commanded him and took Mary home as his wife.
Matthew 1:18-24

Think about this scenario: You are a man who is engaged to be married. You are happily awaiting the wedding night when your mutual love will be consummated. You will no longer be two separate entities, but as the Bible says, you will become “one flesh” united with God’s blessing. But all of a sudden, the joyful anticipation is shattered by news unfathomable…the one in whom you have put your trust has seemingly been unfaithful. You know it’s not your child, for you have not yet known her intimately. What are you going to do? You still love her and don’t want to cause her public shame. “Okay, think this over calmly”, you say to yourself. “You can just break off the engagement privately without anyone’s name being dragged through the mud.” You go to bed that night still pondering the situation. Your fretful sleep is further interrupted by…“What is this?…an angel!” He is telling you not to be afraid to take your sweetheart as your wife because the child she is carrying is non-other than the long awaited Messiah and she has conceived by the Holy Spirit, not a mortal man. Your bride-to-be is to be the mother of our Lord! Do you dare believe it? You know what the angel said and you know the message was from God. Then excitement begins to arise as you realize that you also have been chosen…chosen to care for the mother of the very Son of God!  Not only so, but to be an earthly father to Jesus!

This is the story of Joseph and his part in the birth of Jesus. The Bible says he did exactly as the angel commanded him. He took Mary as his wife, but did not have a marital relationship with her until after Jesus was born. What dedication this man had to the things of God! Think about it. Would you have obeyed the voice of the angel in blind faith? Or would you have attributed the whole dream to a bad case of indigestion? We can still hear the voice of the Lord today if we are listening. He probably won’t send an angel, but He still speaks in that still, small voice deep inside. Will you be like Joseph and believe and obey without question?