How do we know Christ's authority to heal and forgive sins?

The miracles of Christ serve a dual purpose: first, to attest to His identity as the Son of God and second, to illustrate the spiritual realities of salvation. In Acts 2:22, Peter proclaims that Jesus was a man approved of God through miracles and wonders. These acts are not simply displays of power; they reveal His mercy towards hopeless sinners, affirming that He is the only one who can cleanse us from the leprosy of sin. By healing the leper, Jesus authenticated His message of redemption, showing that He has the authority to forgive sins and restore us to a relationship with God.