Luke 13:11

11.And, lo, a woman Here is related a miracle performed on a woman who was cured, and the offense which the malignity of the Jews led them to take up, because our Lord had cured her on a Sabbath -day Luke says that the woman was held by a spirit of infirmity, so that her body was bent by the contraction of her nerves. As the nature of the disease is no farther described, it is probable that it was not one of an ordinary kind, or which was understood by physicians; and, therefore, he calls it a spirit of infirmity. We know that diseases of an unusual and extraordinary kind are, for the most part, inflicted on men through the agency of the devil; and this gave the more striking display of the divine power of Christ, which triumphed over Satan. Not that Satan rules over men according to his pleasure, but only so far as God grants to him permission to injure them. Besides, as the Lord, from whom alone all our blessings flow, makes his glory to shine with peculiar brightness in those blessings which are more remarkable, and of rare occurrence; so, on the other hand, it is his will that the power and tyranny of Satan should be chiefly regarded in extraordinary chastisements, though his agency is likewise employed in those more gentle applications of the rod, which we experience from day to day.