How do we know that God is involved in healing and cleansing?

Throughout the Bible, God's sovereignty is highlighted through miraculous healing and cleansing, underscoring His authority over both physical ailments and spiritual conditions. In the account of the ten lepers in Luke 17, Jesus instructs them to show themselves to the priests after they are cleansed—this act not only fulfills the law but serves as a testimony to God’s miraculous power among his people. Just as lepers needed divine intervention for physical healing, humanity requires God's grace for spiritual redemption, affirming that all transformation comes ultimately from Him.