How do we know the promises of Jesus's will are true?

The truth of Jesus's promises stems from His perfect will and the assurance that He, as the living testator, actively oversees the fulfillment of His gifts. Unlike earthly testators who appoint executors who may fail, Christ ensures the execution of His legacies because He lives eternally. This guarantees that His promises of mercy, peace, and eternal blessings will be securely provided for His people. Hebrews 9:16-17 reiterates that these promises hold true because they are grounded in His steadfast love and commitment to His chosen ones.