'House of David' in the Bible

And Saul sendeth messengers unto the house of David to watch him, and to put him to death in the morning; and Michal his wife declareth to David, saying, 'If thou art not delivering thy life to-night -- tomorrow thou art put to death.'

And Jonathan covenanteth with the house of David, and Jehovah hath sought it from the hand of the enemies of David;