Examining the ministry of Jesus, we find it manifests a considerable concern for the physical well-being of people. When in the synagogue at Nazareth Jesus read the scroll of Isaiah he focused on material needs: "… good news to the poor … release to the captives … recovery of sight to the blind … to set at liberty those who are oppressed …" (Luke 4:18).
And when John the Baptist’s disciples came to Jesus asking if he really was the longed-for Messiah, Jesus answered by pointing to his ministry to the spiritual and physical needs of people. Actually, it was his concern for people’s bodies that made the good news so "good."
In Luke 5:16,17 we find Jesus needing to withdraw for a time from the crowds into a lonely wilderness place, so that his spirit may be renewed in prayer and his body rested. But when he leaves the wilderness, he immediately plunges once again into his ministry to bodies and souls.
Later, in Luke 5:8-26 we find the same connection between the spiritual and the physical as a paralytic is lowered through the roof by his friends. Looking at the man and his paralyzed body, Jesus says: "Man, your sins are forgiven you."
Fortunately, no one observing this incident rushed to say, "Sorry, Jesus, you misunderstood: It is not for his sins that this man was brought to you, but his paralysis!" To Jesus they were simply two sides of the same coin.
Jesus turned to his critics and asked: "Which is easier to say, ‘Your sins are forgiven you,’ or to say, ‘Rise up and walk?’" The physical malady and the spiritual ‘dis-ease’ went hand in hand.
A physician, Dr. John A.P. Millet, has written: "Modern medical practice at the best level takes full cognizance of the fact that the human being must be considered as a total entity, not just someone who has a bad pair of tonsils, a grumbling appendix or a low basal metabolism …
"The significance of the illness to the patient, the pressures under which he has lived, the attitudes of those nearest him, his economic and social situation and the outstanding traits in his personality – all these, and perhaps other special factors, must be evaluated and their contribution to the total picture of disability must be correctly estimated." (John A.P. Millet, M.D., "Body, Mind and Spirit" in Religion and Health, Ed. by Simon Doniger, New York: Association Press, 1958.)
In short, it’s not so much what bug has the fellow, as what fellow has the bug. Jesus knew the resolution of the matter was not in debate, but demonstration. So he commanded him to stand up and walk. And he did. God has given us one of each; so, it is either body and soul, or it may be neither.