Be not forgetful to entertain strangers - On the duty of hospitality, see a full explanation in the notes on Romans 12:13.

For thereby some have entertained angels unawares - Without knowing that they were angels. As Abraham (Genesis 18:2 ff), and Lot did; Genesis 19. The motive here urged for doing it is, that by entertaining the stranger we may perhaps be honored with the presence of those whose society will be to us an honor and a blessing. It is not well for us to miss the opportunity of the presence, the conversation, and the prayers of the good. The influence of such guests in a family is worth more than it costs to entertain them. If there is danger that we may sometimes receive those of an opposite character. yet it is not wise on account of such possible danger, to lose the opportunity of entertaining those whose presence would be a blessing. Many a parent owes the conversion of a child to the influence of a pious stranger in his family; and the hope that this may occur, or that our own souls may be blessed, should make us ready, at all proper times, to welcome the feet of the stranger to our doors. Many a man, if, he had been accosted as Abraham was at the door of his tent by strangers, would have turned them rudely away; many a one in the situation of Lot would have sent the unknown guests rudely from his door; but who can estimate what would have been the results of such a course on the destiny of those good people and their families? For a great number of instances in which the pagan were supposed to have entertained the gods, though unknown to them, see Wetstein in loc.

To entertain stranger's - In those early times, when there were scarcely any public inns or houses of entertainment, it was an office of charity and mercy to receive, lodge, and entertain travelers; and this is what the apostle particularly recommends.

Entertained angels - Abraham and Lot are the persons particularly referred to. Their history, the angels whom they entertained, not knowing them to be such, and the good they derived from exercising their hospitality on these occasions, are well known; and have been particularly referred to in the notes on Genesis 18:3 (note); Genesis 19:2 (note).

Be not forgetful to entertain strangers,.... By whom are meant, not unconverted men, who are strangers to God and Christ, and the covenants of promise; nor saints, who are as pilgrims and strangers in this world; but such as are of another country, and are unknown; and even though wicked men, they are not excluded; though such as are obliged to quit their own country for righteousness sake are chiefly designed; all strangers in distress are meant, and hospitality is to be exercised towards them; which lies negatively in doing nothing to distress them, and positively in providing food, raiment, lodging, &c. for them, and in comforting, counselling, and directing them in all matters in which they may stand in need thereof: and that this is a duty, appears from the light of nature, and practices of the Heathens, Acts 28:2, from the express law of God, Deuteronomy 10:19 and many others made in favour of strangers, binding on the Jews; from the sundry exhortations to it in the New Testament, Romans 12:13 and from the exhortation here not to forget it; and from the great regard which Christ will show to such as mind it, and his disregard to others at the last day: the persons who are to exercise it are not only the ministers of the Gospel, who should be given to hospitality; but all the saints, even the meaner sort are not exempted, but should use it according to their ability; though it is chiefly binding on those that are rich. And this should not be forgot, but pursued and followed after; it should be frequently performed; men should be given, and used to it; it should be done without grudging, and in a friendly and loving manner:

for thereby some have entertained angels unawares; as Abraham, Genesis 18:1, he knew them not to be angels at first; they appeared as men, and he treated them as such; but they were angels, yea, one of them was Jehovah himself; and hereby he received many favours, Genesis 18:10, and Lot, Genesis 19:1 who knew not that they were angels he took into his house; but they were, and he was delivered by them from the burning of Sodom; yea, some have unawares, this way, entertained Christ himself, Luke 24:15 and indeed, entertaining of his members is entertaining him, Matthew 25:38. It is an observation of a Jewish writer (r) upon the first of these instances;

"from hence we learn (says he) how great is the strength (or virtue) of the reception of travellers (or hospitality), as the Rabbins of blessed memory say, greater is , "hospitality", than the reception of the face of the Shechinah.''

And this is said to be one of the six things which a man enjoys the fruit of in this world, and for which there remains a reward in the world to come (s).

(r) R. Abraham Seba in Tzeror Hammor, fol. 18, 4. (s) T. Bab. Sabbat, fol. 127. 1.

Be not forgetful to entertain strangers (τῆς φιλοξενίας μὴ ἐπιλανθάνεσθε)

Lit. be not forgetful of hospitality. Φιλοξενία only here and Romans 12:13. olxx. Φιλόξενος hospitable, 1 Timothy 3:2; Titus 1:8; 1 Peter 4:9. The rendering of Rev. to show love unto strangers, is affected. On the injunction comp. Romans 12:13; 1 Timothy 3:2; Titus 1:8; 1 Peter 4:9, and see Clem. Rom. Ad Corinth. x., xi., xii. The virtue of hospitality is not distinctively Christian. It appears with the very beginnings of history, largely as the result of nomadic conditions. It was peculiarly an Oriental virtue. In the Egyptian Book of the Dead, commendatory judgment is awarded to him who has fed the hungry and clothed the naked. The O.T. abounds in illustrations, and the practice of hospitality among the Arabs and Bedoueen is familiar through the writings of travelers in the East. Great stress was laid on the duty by the Greeks, as appears constantly in Homer and elsewhere. Hospitality was regarded as a religious duty. The stranger was held to be under the special protection of Zeus, who was called ξένιος, the God of the stranger. The Romans regarded any violation of the rites of hospitality as impiety. Cicero says: "It seems to me eminently becoming that the homes of distinguished men should be open to distinguished guests, and that it is an honor to the Republic that foreigners should not lack this kind of liberality in our city" (De Off. ii.18).

Have entertained angels unawares (ἔλαθόν τινες ξεσίσαντες ἀγγέλους)

The Greek idiom is, "were not apparent as entertaining angels." The verb ἔλαθον were concealed represents the adverb unawares. For similar instances see Mark 14:8; Acts 12:16; Aristoph. Wasps, 517; Hdt. i. 44; Hom. Il. xiii. 273. Ξενίζειν to receive as a guest, mostly in Acts. In lxx only in the apocryphal books. In later Greek, to surprise with a novelty; passive, to be surprised or shocked. So 1 Peter 4:4, 1 Peter 4:12; comp. 2 Ep. of Clem. of Rome (so called), xvii.: To be a stranger or to be strange, once in N.T., Acts 17:20. Ξενισμός amazement, perplexity, not in N.T. lxx, Proverbs 15:17. Comp. Ignatius, Ephesians 19.The allusion to the unconscious entertainment of angels is probably to Genesis 18, 19, but the idea was familiar in Greek literature. The Greeks thought that any stranger might be a God in disguise. See Hom. Od. i. 96 ff.; iii.-329-370; xvii. 485. Comp. also the beautiful story of Baucis and Philemon as related by Ovid (Metam. viii. 626-724). The thought appears in our Lord's words, Matthew 25:34-46.

Be not forgetful to entertain strangers: for thereby some have entertained angels unawares.

13:2 Be not forgetful to entertain strangers. Hospitality is a duty often emphasized in the New Testament. Here it assumes the form of receiving stranger saints. Often they were driven from their homes by persecution, and the church elsewhere was wont to open its homes to them.

Some have entertained angels unawares. See Ge 18:1-3 Mt 25:35.

13:2 Some - Abraham and Lot. Have entertained angels unawares - So may an unknown guest, even now, be of more worth than he appears, and may have angels attending him, though unseen. Gen 18:2; Gen 19:1.

13:1-6 The design of Christ in giving himself for us, is, that he may purchase to himself a peculiar people, zealous of good works; and true religion is the strongest bond of friendship. Here are earnest exhortations to several Christian duties, especially contentment. The sin opposed to this grace and duty is covetousness, an over-eager desire for the wealth of this world, with envy of those who have more than ourselves. Having treasures in heaven, we may be content with mean things here. Those who cannot be so, would not be content though God raised their condition. Adam was in paradise, yet not contented; some angels in heaven were not contented; but the apostle Paul, though abased and empty, had learned in every state, in any state, to be content. Christians have reason to be contented with their present lot. This promise contains the sum and substance of all the promises; I will never, no, never leave thee, no, never forsake thee. In the original there are no less than five negatives put together, to confirm the promise: the true believer shall have the gracious presence of God with him, in life, at death, and for ever. Men can do nothing against God, and God can make all that men do against his people, to turn to their good.