How do we know Jesus has the power to forgive sins?

The authority of Jesus to forgive sins is encapsulated in His actions in Mark 2:5-11. When He tells the sick man that his sins are forgiven, He demonstrates that He is acting in God's authority. The event proceeds to affirm His power further when He commands the man to rise and walk, showcasing that He has control over both physical and spiritual ailments. This dual action serves to validate His declaration of forgiveness, making it clear that only God can forgive sins, as sin is ultimately against God. By performing this miracle, Jesus provides tangible evidence of His divine status and authority as the Son of Man.