'House of Israel' in the Bible

For finding fault with them, He said to them, "Behold, days are coming, says the Lord, and I will make an end on the house of Israel and on the house of Judah; a new covenant shall be,

"For this is the covenant that I will make with the house of Israel after those days, says the Lord: I will put My Laws into their mind and write them in their hearts, and I will be their God, and they shall be My people.