'House of David' in the Bible

Yahweh also will save the tents of Judah first, that the glory of the house of David and the glory of the inhabitants of Jerusalem not be magnified above Judah.

In that day Yahweh will defend the inhabitants of Jerusalem. He who is feeble among them at that day will be like David, and the house of David will be like God, like the angel of Yahweh before them.

I will pour on the house of David, and on the inhabitants of Jerusalem, the spirit of grace and of supplication; and they will look to me whom they have pierced; and they shall mourn for him, as one mourns for his only son, and will grieve bitterly for him, as one grieves for his firstborn.

The land will mourn, every family apart; the family of the house of David apart, and their wives apart; the family of the house of Nathan apart, and their wives apart;

"In that day there will be a spring opened to the house of David and to the inhabitants of Jerusalem, for sin and for uncleanness.