Why is Christ's finished work central to a believer's confidence?

The finished work of Christ is the cornerstone of a believer's confidence as it assures them of their acceptance before God. The sermon underscores that salvation is accomplished through Christ's life, death, and resurrection, which fulfills all requirements for redemption. As stated in Romans, believers can approach God boldly because Jesus has purged their sin, making them righteous in His sight. Therefore, a believer’s confidence should not rest on personal merit but solely on faith in Christ’s atoning sacrifice, which is sufficient to cover all sins and reconcile them to God.