John Chrysostom
He did not say, “Be hospitable,” as though they were not so, but, “Do not forget hospitality,” because this could happen through afflictions. Then he adds what could especially encourage them: “for through it some,” he says, “unknowingly entertained angels.” Do you see what honor and what benefit? What does “unknowingly” mean? They received angels as guests without themselves knowing it. For this reason Abraham was counted worthy of a great reward, because he received angels without knowing that they were angels (Gen 18:2-8, 10, 18-19). Had he known, it would not have been at all remarkable. Some think that the Apostle also means Lot here and says this of him (Gen 19:2-3).
Read more (59 words)
[...] He did not say, “Do not forget the receiving of strangers,” but “hospitality,” that is, do not merely receive strangers, but receive them with love. And he did not point to the future and coming recompense, lest they again become careless. Rather, he pointed to the recompense already given: “for through it some,” he says, “unknowingly entertained angels.”