Let mutual love continue. Do not neglect to show hospitality to strangers, for by doing that some have entertained angels without knowing it.
And so, as we think about our own experience here on Chardon Square, let’s try to imagine what it must’ve been like for the earliest Christians who didn’t have much of a guidebook, and who had very little experience to guide them as they set out on the path of being a Christian in a world that either didn’t know who they were or—if it did—was anxious to stamp them out before they were able to spread too far.
The gospels, the Acts of the Apostles, and the epistles (or letters) of the New Testament provided a basic roadmap for the first-century church. One such letter was clearly intended to help Jewish Christians better understand and relate to their new faith, because the whole letter is in dialogue with what we now call the Old Testament— in ways that no other New Testament book is. As the late great preacher Fred Craddock put it, “The Christian faith grows out of and is sustained by the conversation between the church and its Bible.”  This letter is perhaps the best example of this we see in the Bible itself, for it is the church speaking to and on behalf of the church using arguments that are upheld by the scriptures and in conversation with those same scriptures.
Most of the letter is deeply theological in nature, explaining who Christ is and how Christ fulfills both the law and the prophets, and also explaining the intricate relationship between what we do and what we believe. In fact, it’s probably the most wonderful demonstration anywhere in the Bible of how the faith of the patriarchs and matriarchs was more important than what they actually did. Works came as a result of faith, and therefore, it has always been faith that has saved the faithful.
If I could, though, I’d like to translate this verse using a Greek word that we’re all familiar with. The actual first word of Hebrews 13 in the original language is also the name of the largest city in Pennsylvania. So it’s possible to say in English, “Let philadelphia continue,” since we all know (I think) that φιλαδελφία is actually a Greek word meaning brotherly (or sisterly) love, translated in the NRSV as mutual love—basically, love for people who are like unto ourselves.
But then the author of this letter moves from how we treat people like us—φιλαδελφια—to how we treat the people whom we consider to be outsiders. This Greek word isn’t one we immediately recognize but it’s easy to figure out. In our current political climate, we’re probably increasingly aware of something called xenophobia, or the fear of foreigners or strangers. A -phobia, as we all know, is a fear. So that means that the xeno- part of the word must mean stranger.
Hospitality is, in fact, a huge theme in the Bible, because people’s survival back in the days it was written depended on the kindness of strangers. If I had to choose one very important thing that has been lost in the ensuing centuries, it is this one. In our time and in our culture, hospitality is more of a for-profit industry than a way of life. Whether we travel on business or for pleasure, we count on the hospitality industry to make us comfortable. Hospitality also comes into play when we encounter somebody on the streets in need of directions, say, to the Square; and we feel good about ourselves when we take time out of our busy schedule to point them in the right direction. Occasionally hospitality takes charge of our lives when we entertain friends from out of town for a few days in our homes. But for the most part—unless it’s what we’re paid to do—hospitality plays a relatively minor rôle in how we live.
But in the ancient world—especially in arid areas where water and food were scarce—if people couldn’t count on strangers when they went from place to place, they simply wouldn’t survive. They couldn’t call ahead for reservations. They often couldn’t afford inns—but even if they could, cities and towns were sometimes too distant to get to before nightfall.
But as important as hospitality was in general, Hebrews talks about it in a unique way—a way that is, in fact, very Hebrew. Never fail to practice strangerly love (or hospitality), for by doing that, some have hosted angels without knowing it. The Authorized Version put it especially beautifully: thereby some have entertained angels unawares. The writer could’ve been referring to some contemporary Christians he or she knew. But it’s probably more likely that they were referring to an Old Testament story, such as the one found in Genesis 18 when three strangers appeared to Abraham and Sarah. The writer of Genesis clues us in in the very first verse that it’s “the Lord” who came to them, though later interpretations have tended toward the view that the three men were messengers of the Lord. But through them, God promised Sarah and Abraham a child: Angels unawares. 
One example was a show called Undercover Boss. In this show, a high-ranking executive poses as a low-ranking employee in their own company in order to see what’s really going on. At the end of each episode, the true identity of the employee is revealed. Some of the people they worked with are rewarded, while others are penalized—or even fired.
Another example is called Mystery Diners. In this one, a restaurant owner can’t figure out why they’re losing so much money, or why patrons won’t come back, or some other problem. And so they call in the “mystery diners” who pretend to be new employees or customers or vendors. They’re wired with secret cameras, and in this way the restaurant owner can find out stuff they wouldn’t know otherwise—such as who’s stealing from them, or who’s treating the customers rudely, or who’s abusing the employees.
Calvin had himself been just such a fugitive who had been forced to flee his native France because of his religious beliefs. And one of his principle functions in life was to minister to other refugees who were coming to Geneva because of their religious beliefs. These people weren’t just Frenchmen and -women, but were also English and Scots and Hungarian and Dutch and German. We don’t need to forgive Calvin for allowing his interpretation of the scriptures to be influenced by his own experience. Indeed, I think that’s precisely what we should do when we read the Bible.
How is this possible? you might ask. What does the one have to do with the other? It’s possible because the Letter to the Hebrews is actually a bit of a downgrade from the Gospel According to Matthew, where “not mere angels are received, but Christ himself, when we receive the poor in his Name.” 
We are created in the Image of God, and rejecting that Image—whether in friend or stranger—is a rejection of the One in whose Image that person was made. So far from the metaphysical nature of an angel coming to us in the guise of a person in need of either φιλαδελφια (brotherly/sisterly love) or φιλοξενια (strangerly love), it is both easier and theologically much more satisfying to look not upon the outward appearance, but at the Image at the other person’s core. In so doing, we will see the very Incarnation of God.
Because Christ was one of us, we are one with Christ, “who enjoins us to do good to all without exception.”  It’s easy to object that there are many who deserve no such treatment. They’ve brought it upon themselves. They’re where they shouldn’t be. They don’t have the proper documents. They’re bad people. “But scripture [gives] a most excellent reason when it tells us that we are not to look to what people in themselves deserve, but to attend to the Image of God, which exists in all, and to which we owe all honor and love.” 
In a climate of mistrust and xenophobia, let us, therefore, be a people of honor, a people of love, a people who do not neglect to show hospitality to strangers—not out of fear for the angel in them we cannot see, but because of love for the Christ in them we do see.
—©2019 Sam L. Greening, Jr.NOTES
- Fred R. Craddock, The Letter to the Hebrews, The New Interpreter’s Bible, Vol. XII (Nashville: Abingdon, 1998) p. 3.
- Perhaps you think I quote Calvin too often, but have you ever considered that Calvin might simply have been predicting what Sam Greening was going to say on any particular topic.
- Matthew 25:32.
- John Calvin, Commentary on Hebrews 13:2.
- Genesis 1:26-27.
- John Calvin, Institutes of the Christian Religion 3.7.6. It should be noted that in the next sentence Calvin states that “in those who are of the household of faith, the same rule is to be more carefully observed, inasmuch as that image is renewed and restored in them by the Spirit of Christ,” thus emphasizing φιλαδελφια (Hebrews 13:1) over φιλοξενια (13:2).