How do we know the promise of inheritance is true?

The assurance of our inheritance stems from God's fidelity to His promises, as shown in Scripture. In Galatians 3:16-17, Paul emphasizes that the law given to Moses cannot nullify the promise made to Abraham. This promise is eternal and rooted in God's character, which is faithful and true. Furthermore, various Scriptures such as Hebrews 6:13-20 illustrate that God swears by Himself to guarantee His promises, ensuring that believers can confidently trust in their spiritual inheritance.