How do we know that we are heirs according to the promise?

In Galatians 3:29, Paul affirms that 'if ye be in Christ, then are ye Abraham's seed and heirs according to the promise.' This statement reassures Christians of their standing before God as children and heirs, not by physical descent but through faith in Christ. The promise signifies that all believers are incorporated into God's covenant family, which is richly blessed with the assurance of eternal inheritance. This inheritance is not subject to decay and is preserved in heaven for all who are kept by God’s power. This truth embodies the foundation of hope and security for Christians as they walk in faith.