Catena Aurea on Matthew 9:1–8: Gregory the Great

Or by the bed is denoted the pleasure of the body. He is commanded now he is made whole to bear that on which he had lain when sick, because every man who still takes pleasure in vice is laid as sick in carnal delights; but when made whole he bears this because he now endures the wantonness of that flesh in whose desires he had before reposed.