“the house of Joseph.” This refers to Israel, the ten tribes that were carried away from the land of Israel by the Assyrians (c. 722 BC) and have not yet returned to Israel.
“and I will bring them back.” Many prophecies foretell the restoration of the country of Israel in the land of Israel, the Promised Land, and Ezekiel 40-48 give a lot of information about what that restoration of Israel will look like. [For more information on Israel’s return to the Promised Land, see commentary on Jer. 32:37. For more on the coming kingdom of Christ on earth, see Appendix 3, “Christ’s Future Kingdom on Earth”].