'House of Judah' in the Bible

Then the men of Judah came and there anointed David king over the house of Judah.And they told David, saying, “It was the men of Jabesh-gilead who buried Saul.”

Now therefore, let your hands be strong and be valiant; for Saul your lord is dead, and also the house of Judah has anointed me king over them.”

Ish-bosheth, Saul’s son, was forty years old when he became king over Israel, and he was king for two years. The house of Judah, however, followed David.

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