'House of David' in the Bible

The LORD shall preserve the tents of Judah, like as afore time: so that the glory of the house of David and the glory of the citizens of Jerusalem, shall be but little regarded in comparison of the glory of Judah.

In that day shall the LORD defend the citizens of Jerusalem: so that the weakest then among them shall be as David: and the house of David shall be like as God's house, and as the Angel of the LORD before them.

Moreover, upon the house of David and upon the citizens of Jerusalem, will I pour out the spirit of grace and prayer, so that they shall look upon me, whom they have pierced: and they shall beweep him, as men mourn for their only begotten son: Yea, and be sorry for him, as men are sorry for their first child

And the land shall bewail, every kindred by themselves: the kindred of the house of David themselves alone, and their wives by themselves;

In that time shall the house of David and the citizens of Jerusalem have an open well, to wash of sin and uncleanness.