'House of Israel' in the Bible

as we see there was, for after complaining of them, He adds, "Behold the days come, saith the Lord, that I will make a new covenant with the house of Israel, and with the house of Judah:

But this is the covenant that I will make with the house of Israel after those days, saith the Lord, I will put my laws into their mind, and I will inscribe them on their hearts; and I will be to them a God, and they shall be to me a people.