How do we know that Jesus can cleanse us from our sins?

Jesus' miracles, including the cleansing of the leper, showcase His authority as the sovereign Savior. Throughout His ministry, He demonstrated that He had the power to forgive sins, as seen when He told the paralyzed man to take up his bed and walk (Luke 5:24). Jesus's response to the leper, 'I will; be thou clean,' affirms His willingness and ability to cleanse us from all unrighteousness. Our assurance lies in the nature of Christ Himself, who is both compassionate and omnipotent. We come to Him as lepers—recognizing our sinfulness—but we touch the One who can heal us completely.