"We tend to equate hospitality with parties and social gatherings or gracious resorts and expensive restaurants. To us hospitality is an industry, not a practice, one that summons Martha Stewart to mind more quickly than Jesus Christ. But to ancient Christians hospitality was a virtue, part of the love of neighbor and fundamental to being a person of the way. While contemporary Christians tend to equate morality with sexual ethics, our ancestors defined morality as welcoming the stranger.
Unlike almost every other contested idea in early Christianity, including the nature of Christ and the doctrine of the Trinity, the unanimous witness of the ancient fathers and mothers was that hospitality was the primary Christian virtue. From the New Testament texts that unambiguously urge believers to 'practice hospitality' through St. Augustine's works in the fifth century, early Christian writings extol hospitality toward the sick, the poor, travelers, widows, orphans, slaves, prisoners, prostitutes, and the dying."