How Is Jesus Related To Abraham And David?

I know Jesus was conceived by a virgin. How then is he being linked in geneology to Abraham and David if Joseph is not his father. Joseph, husband to Mary is also listed in this geneology as giving legitimacy to the fact that Jesus as a man is a descendant of Abraham.

Q. Thanks for your website, it is so enlightening in an era were you find so many teachings. Keep up the good work and may God richly bless you with his knowlege and wisdom.

An issue which bothers me is this, I know Jesus was conceived by a virgin. How then is he being linked in geneology to Abraham and David if Joseph is not his father. Joseph, husband to Mary is also listed in this geneology as giving legitimacy to the fact that Jesus as a man is a descendant of Abraham. It does not challenge my faith but it keeps own popping up as a question in my mind. Probably the devil trying to twist me around to doubt my faith. What can you say about it.

A. Jesus is a legal descendant of Abraham and David by virtue of his adoption by Joseph. He’s a blood descendant of David’s through His mother Mary who was also of the Tribe of Judah. That’s why the Lord’s genealogy is different in Luke (Mary’s) than it is in Matthew (Joseph’s). When the bible says that Jesus is of the house and lineage of David, it’s referring to both these things. Here’s a link to a more complete answer to a similar question.
http://www.gracethrufaith.com/ask-a-bible-teacher/qualifying-jesus-as-israels-king