'House of Judah' in the Bible

And the men of Judah will come and will anoint there David for king over the house of Judah. And they will announce to David, saying, The men of Jabesh-Gilead that buried Saul

And now your hands shall be strengthened, and be ye for sons of strength: for Saul your lord died, and also the house of Judah anointed me for king over them.

The son of forty years, the man of shame, son of Saul, in his reigning over Israel; and two years he reigned: but the house of Judah was after David

And the number of days which David was king in Hebron over the house of Judah, will be seven years and six months.