Matthew 1 Jesus was the son of David and Abraham? Really?

Matthew 1 (New International Version)

Matthew 1

The Genealogy of Jesus

¹A record of the genealogy of Jesus Christ the son of David, the son of Abraham:
²Abraham was the father of Isaac,
Isaac the father of Jacob,
Jacob the father of Judah and his brothers,
...
...
...
¹⁵Eliud the father of Eleazar,
Eleazar the father of Matthan,
Matthan the father of Jacob,
¹⁶and Jacob the father of Joseph, the husband of Mary, of whom was born Jesus, who is called Christ.



*****Here is the problem,
Joseph is the son of David, and the son of Abraham, however, Mary was a VIRGIN. And Joseph didn't touch her, so, how can you say that Jesus was the son of David and the son of Abraham (Matthew 1:1) when he is not the son of Joseph? It was only Mary that took part, and who the heck is Mary?

Yeah, just have faith, believe everything. The bible is the truth. The truth my arse. Mary can be a Chinese as far as anyone is concerned. And Jesus was Chinese. Did they draw Mary in the bible? Was she blonde, red head, brunette or dark hair. She could be BALD and no one would notice!

Is there anything that make sense at all in the bible?