How do we know that a believer's death can glorify God?

As per John 21:19, the Spirit interprets Jesus' words about Peter’s death, indicating that our deaths can serve as powerful testimonies to God’s glory. The manner in which we die—whether in readiness, peace amidst suffering, or by demonstrating faith in God’s grace—can profoundly impact those around us. Historical instances showcase that the patient deaths of martyrs often had greater effects on society than their lives. By trusting God through death, believers embody a powerful witness that affirms the hope of the Gospel, leaving an indelible mark on those who observe their faith.