'House of David' in the Bible

And it was told the house of David, saying, Syria hath settled down upon Ephraim. Then shook his heart, and the heart of his people, as the trees of a forest shake before a wind.

Then said he - Hear, I pray you, O house of David! Is it, too little, for you to weary men, that ye must weary even my God?

And I will lay the key of the house of David upon his shoulder, - And he shall open and none shall shut, And shut and none shall open;