How do we know Christ's death provides redemption?

The reality of Christ's redemptive work lies in the fact that He has obtained eternal redemption for us (Hebrews 9:12). This redemption was accomplished at the cross, where He paid the full penalty for our sin, ensuring that believers would be free from guilt, condemnation, and the power of sin. The nature of this redemption is eternal; it can't be reversed or lost, ensuring that every chosen people will be saved, as their redemption was finalized 2,000 years ago at Calvary. This assurance of salvation is foundational to our faith.