'House of Judah' in the Bible

And when Rehoboam was come to Jerusalem, he assembled the house of Judah and Benjamin, a hundred and fourscore thousand chosen men, that were warriors, to fight against Israel, to bring the kingdom again to Rehoboam.

And, behold, Amariah the chief priest is over you in all matters of Jehovah; and Zebadiah the son of Ishmael, the ruler of the house of Judah, in all the king's matters: also the Levites shall be officers before you. Deal courageously, and Jehovah be with the good.

Now when Athaliah the mother of Ahaziah saw that her son was dead, she arose and destroyed all the seed royal of the house of Judah.