'House of Judah' in the Bible

The men of Judah came, and there they anointed David king over the house of Judah. They told David, saying, "The men of Jabesh Gilead were those 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 have anointed me king over them."

Ishbosheth, 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.

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