'Son of David' in the Bible

And when he heard that it was Jesus the Nazarene, he began to cry out, and say, Jesus, thou son of David, have mercy on me.

And many rebuked him, that he should hold his peace: but he cried out the more a great deal, Thou son of David, have mercy on me.

And Jesus answered and said, as he taught in the temple, How say the scribes that the Christ is the son of David?