Mark 12:35-37
Chapter 12
35
On the Messiah and David
As Jesus was teaching in the temple, he said: “The teachers of the law say that the Messiah is the Son of David. How can that be?36
For David himself, inspired by the Holy Spirit, declared: The Lord said to my Lord, ‘Sit at my right hand until I put your enemies under your feet!’
37
If David himself calls him Lord, in what way can he be his Son?”Many people came to Jesus and listened to him gladly.

Commentaries
On the Messiah and David.
Jesus does not accept the Davidic lineage for two reasons: first, because he is greater than David, and second, because he rejects the idea of a king who, like David or anyone else, does not come to serve but to be served.