'House of Israel' in the Bible

And when Rehoboam was come to Jerusalem, he gathered all the house of Judah and the tribe of Benjamin, a hundred and four score thousands of chosen men and good warriors, to fight against the house of Israel, and to bring the kingdom again to Rehoboam the son of Solomon.

Then said his servants unto him, "Behold, we have heard say that the kings of the house of Israel are merciful kings. Let us put sack cloth about our Loins and ropes about our heads, and go out to the king of Israel: haply he will save thy life."