How do we know that Christ can cleanse us from sin?

The assurance of Christ's cleansing power is deeply rooted in the Gospel. Just as the lepers in Christ's time approached Him for purification, believers today can come with confidence knowing He fully paid the penalty for sin. In Leviticus, the declaration of a leper being clean highlights the transformative power of God’s grace. Christ, as our Great High Priest, not only observes our state but actively cleanses it through His sacrificial death. The reality is that regardless of our level of sinfulness, when we bring our complete sinfulness to Christ, He declares us clean because He took upon Himself our sins and made atonement.