The house of Jacob is the nation of Israel. They are the twelve tribes of Israel. It is the name of the covenant family of the God of Israel. The House of Jacob was divided into the house of Israel and the house of Judah. The New Covenant was made with both of these houses (Jeremiah 31:31). The house of Israel and the house of Judah will be united (Ezekiel 37:15-28). Yeshua will rule over the house of Jacob forever (Luke 1:33).