In this lesson, Carson looks back at the whole of Salvation History to better understand God's purpose for Israel, which is to be a light to the nations. Ultimately, this purpose is fulfilled in Jesus, who recapitulates Israel in his own person and mission. Due to his redemptive work upon Calvary (wherein he takes upon himself the curses of the Mosaic Covenant), the separation between Israel and the other nations is obliterated (See Ephesians There is no need now for those ceremonial precepts as dictated by the Mosaic Law. Those precepts or commands served a temporary (albeit over a long period of time) purpose: to root out idolatry from the heart of Israel and to separate Israel from the Gentiles so as to rehabilitate Israel. God knew that Israel could not be ultimately be rehabilitated unless God gave this firstborn son of his a new heart (See Deuteronomy Plus, in order to restore all 12 tribes under the Messiah, the Gentiles must be incorporated, for the lost tribes of Israel are now indistinguishable from the Gentiles. When the Gospel goes out to the Gentiles, it is not going out just to non-Israelites, but to Israelites as well who have lost their national identity.