Early Christians would have used this passage in Mark, as proof of their claims about forgiveness of sins through Jesus. Jesus responds to the act of faith of the four men who went to extraordinary means to bring the paralytic before him. Jesus addresses the latter: 'Son, your sins are forgiven', indicating to him that he is now before the Divine Healer, not just a miracle worker. We also learn that we can only be restored to wholeness when sin is removed by forgiveness first.
Radical and total healing is the unconditional love of God made present through the unmerited forgiveness of all our sins in the Sacrament of Reconciliation. Jesus is powerful both in word and deed: his power/authority to forgive sins is confirmed by his power to heal the paralytic.
As there is no empirical test, it is surely easier to say that the man's sins are forgiven than to say that the paralytic should get up and walk for which there would be an immediate empirical test. The healing function of Jesus is a sign of the validity of Jesus' declaration about forgiveness. Jesus represents God and the crowd is in admiration recognizing the presence of the Divine even in the face of those who do not believe. In this tangible way Jesus manifests the presence of the Kingdom of God in Himself. All of us need to go through this unique experience of being forgiven and healed in our relationship of prayer with our God.
Lord, heal me ¡K make me whole and holy.