'House of Judah' in the Bible

And the men of Judah came, and there they anointed David king over the house of Judah. And they told David, saying, That the men of Jabesh-gilead were they that buried Saul.

Therefore now let your hands be strengthened, and be ye valiant: for your master Saul is dead, and also the house of Judah have anointed me king over them.

Ish-bosheth, Saul's son, was forty years old when he began to reign over Israel, and he reigned two years: but the house of Judah followed David.

And the time that David was king in Hebron, over the house of Judah, was seven years and six months.