'House of Judah' in the Bible

And the men of Judah came, and there anointed David king over the house of Judah. When it was told David, how the men of Jabesh in Gilead had buried Saul,

And now let your hands stir them and play ye the men, though your master Saul be dead. And finally, understand that the house of Judah have anointed me king over them."

And Ishbosheth Saul's son was forty years old when he began to reign over Israel - and reigned two years. But the house of Judah only followed David.

And the time which David reigned in Hebron over the house of Judah was seven years and six months.