Gregory the Great — as excerpted in the Catena Aurea on Luke 16:27-31

“(ut sup.) The hearts of the wicked are sometimes by their own punishment taught the exercise of charity, but in vain; so that they indeed have an especial love to their own, who while attached to their sins did not love themselves. Hence it follows, For I have five brethren, that he may testify to them, lest they also come into this place of torment.”