How do we know the promises made to Abraham are for believers?

The Apostle Paul clarifies in Galatians that the promises made to Abraham were specifically to his 'Seed,' referring to Christ. This establishes a vital link between Old Testament promises and their fulfillment in the New Testament. Paul emphasizes that it is not merely physical descent that grants one access to God's promises but faith in Christ, the true heir. This understanding assures believers that they partake in these promises through their union with Christ, not through works or lineage. Therefore, the promises are not confined to the descendants of Abraham by blood but extend to all who have faith in Jesus.