Psalms 107:17

If we knew no sin, we should know no sickness. Sinners are fools. They hurt their bodily health by intemperance, and endanger their lives by indulging their appetites. This their way is their folly. The weakness of the body is the effect of sickness. It is by the power and mercy of God that we are recovered from sickness, and it is our duty to be thankful. All Christ's miraculous cures were emblems of his healing diseases of the soul. It is also to be applied to the spiritual cures which the Spirit of grace works. He sends his word, and heals souls; convinces, converts them, makes them holy, and all by the word. Even in common cases of recovery from sickness, God in his providence speaks, and it is done; by his word and Spirit the soul is restored to health and holiness.

Fools because of their transgression, and because of their iniquities, are afflicted. Many sicknesses are the direct result of foolish acts. Thoughtless and lustful men by drunkenness, gluttony, and the indulgence of their passions fill their bodies with diseases of the worst kind. Sin is at the bottom of all sorrow, but some sorrows are the immediate results of wickedness: men by a course of transgression afflict themselves and are fools for their pains. Worse still, even when they are in affliction they are fools still; and if they were brayed in a mortar among wheat with a pestle, yet would not their folly depart from them. From one transgression they go on to many iniquities, and while under the rod they add sin to sin. Alas, even the Lord's own people sometimes play the fool in this sad manner.