Sin may be pardoned, yet the sickness not be removed; the sickness may be removed, yet the sin not pardoned.
If you bring your sins to Jesus Christ, as a malady and misery to be cured of, it is well; but to come with them, thinking still to retain them and receive him, is a gross mistake, a miserable delusion.
The great intention of the blessed Jesus in the redemption he wrought, is to separate our hearts from sin.
Our Lord Jesus has perfect knowledge of all that we say within ourselves. There is a great deal of evil in sinful thoughts, which is very offensive to the Lord Jesus. Christ designed to show that his great errand to the world was, to save his people from their sins. He turned from disputing with the scribes, and spake healing to the sick man. Not only he had no more need to be carried upon his bed, but he had strength to carry it.
Give us, Lord, the same kind of faith with respect to your ability and willingness to heal our souls. Give us to desire the pardon of sin more than any earthly blessing, or life itself. Enable us to believe your power to forgive sins; then will our souls cheerfully arise and go where you please.
[Excerpts from Matthew Henry's Concise Commentary on Luke 5 and Matthew 9]