How does Christ's death ensure our salvation?

Christ's sacrificial death on the cross is the cornerstone of salvation for believers as it served to fulfill the law and pay the penalty for sin. He took on the sins of His people, imputing them to Himself, which means that He bore the wrath of God in their place. This atonement guarantees that those for whom Christ died will not face condemnation but are justified—declared righteous—before God. According to Romans 8:33-34, nothing can separate God's people from His love because their salvation is rooted in Christ's complete and perfect work. Thus, belief in His redeeming work is what creates true assurance of salvation for the elect.