'House of Judah' in the Bible

And the men of Judah come, and anoint there David for king over the house of Judah; and they declare to David, saying, 'The men of Jabesh-Gilead are they who buried Saul.'

and now, are your hands strong, and be ye for sons of valour, for your lord Saul. is dead, and also -- me have the house of Judah anointed for king over them.'

A son of forty years, is Ish-Bosheth son of Saul, in his reigning over Israel, and two years he hath reigned, only the house of Judah have been after David.

And the number of the days that David hath been king in Hebron, over the house of Judah, is seven years and six months.