The New Covenant and Israel

In the Old Covenant, the covenant was more or less co-terminus with the nation of Israel. The New Covenant establishes a new international people who relate to God on an equal footing but it doesn't merely dissolve people into an indiscriminate multitude. Jews as the natural and firstborn seed of Abraham now need to relate to Gentiles as full siblings in the family of Abraham. In chapter 28 of Acts verses 23 to 28, we might also note here that Acts begins with similar themes to first kings,. A Jewish remnant in exile at the heart of the Gentile Empire which crushes Jerusalem.