How do we know that the church is the true Israel?

The concept of the church as the true Israel emerges from the New Testament revelation that Jesus Christ has created a new covenant community that transcends ethnic boundaries. This is articulated in passages such as Ephesians 2:14-16, where it is shown that Christ broke down the dividing wall between Jews and Gentiles, allowing both to become one body through the gospel. Furthermore, Romans 11 explains how a remnant of Israel is saved and incorporated into this new entity, confirming that the church, through faith in Christ, inherits the promises made to the patriarchs. Thus, the true Israel is defined by faith in Christ rather than mere physical descent.