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

“(ut sup.) And here we must remark what fearful sufferings are heaped upon the rich man in flames. For in addition to his punishment, his knowledge and memory are preserved. He knew Lazarus whom he despised, he remembered his brethren whom he left. For that sinners in punishment may be still more punished, they both see the glory of those whom they had despised, and are harassed about the punishment of those whom they have unprofitably loved. But to the rich man seeking Lazarus to be sent to them, Abraham immediately answers, as follows, Abraham saith to him, They have Moses and the prophets, let them hear them.”