How do we know Christ's death is sufficient for salvation?

The sufficiency of Christ's death lies in its acceptance by God as the penalty for our sins. As Spurgeon explains, 'God must punish sin,' and in the death of Christ, He has done just that, providing an atonement that perfectly meets the demands of divine justice. This atonement is not just for past sins; it encompasses present and future sins as well. When believers accept Christ's sacrificial death, they are assured that their sins are completely forgiven, thus affirming the truth that Christ's sacrifice is sufficient for our salvation. The resurrection of Christ further solidifies this assurance, as it demonstrates that His payment was accepted and that He has conquered sin and death.