Why is the concept of the church as the Israel of God important for Christians?

Recognizing the church as the Israel of God is crucial because it underscores the fulfillment of God's redemptive plan through Christ, as all of God's promises find their 'Yes' in Him. Galatians 3:7 and Romans 9 stress that those who have faith are the true children of Abraham. This foundational understanding reinforces that salvation extends beyond ethnic or national boundaries, embracing all who trust in Christ, thus enhancing the unity and identity of the church. It corrects misconceptions that focus solely on ethnicity and directs believers to see themselves as recipients of God's promises.