John Chrysostom, on Heb 13:2

“And hospitality do not forget; for by this some, being not aware of it, have entertained angels.”

“And he did not say, "Be not forgetful" of the entertaining of strangers, but "of hospitality": that is, do not merely entertain strangers, but do it with love for the strangers. Moreover he did not speak of the recompense that is future, and in store for us, lest he should make them more supine, but of that already given. For "thereby some" (he says) "have entertained angels unawares."”

Imported from an open dataset — not yet checked against the printed edition.