How do we know that eternal life is certain for Christians?

The certainty of eternal life for Christians stems from the accomplishment of Christ’s work on the cross, as referenced in 1 Peter 1:3-5. Through His abundant mercy and resurrection, believers are given a living hope. This hope is not just a wish but is grounded in the finished work of Christ, who secured salvation for His people. The Scripture assures us that our inheritance is imperishable and reserved in heaven, demonstrating that God’s power sustains our faith until salvation is fully realized. Hence, our assurance of eternal life is anchored in the divine promise and the faithfulness of God.