1 Peter 4:9

If you receive your neighbor as though he were Christ, you will not complain or feel embarrassed but rather rejoice in your service. But if you do not receive him as if he were Christ, you will not receive Christ either, because he said: "Whoever receives you, receives me." If you do not show hospitality in this way, you will have no reward. Abraham received passers-by and travelers just as they were. He did not leave them to his servants. On the contrary, he ordered his wife to bring flour, even though he had domestic help. But he and his wife wanted to earn the blessing, not only of hospitality but of service also. This is how we ought to show hospitality, by doing all the work ourselves, so that we may be sanctified.

The end of all things is at hand. Therefore, be sober and watchful in prayer. Above all, keep fervent in your love for one another, because love covers a multitude of sins. Be hospitable to one another without complaint. The end, that is, completion, consummation …

Behold, the Lord was not recognized while He was speaking, and He deigned to be recognized while He was being fed. Therefore, dearest brothers, love hospitality, love the works of charity. For hence it is said through Paul: "Let brotherly love continue in you, and do not forget hospitality. For through this some have pleased, having received angels as guests." Hence Peter says: "Be hospitable to one another without murmuring." Hence Truth itself says: "I was a stranger, and you took me in." There is a story well regarded and handed down to us by the account of our elders. A certain father of a household served with great zeal for hospitality along with his whole house; and while he received strangers at his table daily, one day a certain stranger came among others and was led to the table. And while the father of the household, from his custom of humility, wished to pour water on his hands, he turned and took the pitcher, but suddenly did not find the one on whose hands he had wished to pour water. And while he marveled at this occurrence to himself, that same night the Lord said to him through a vision: On other days you received me in my members, but yesterday you received me in myself. Behold, coming to judgment, He will say: What you did for one of my least ones, you did for me. Behold, before the judgment, when He is received through His members, He also visits His hosts through Himself; and yet we are sluggish toward the grace of hospitality. Consider, brothers, how great is the virtue of hospitality. Receive Christ at your tables, that you may be worthy to be received by Him at the eternal banquet. Offer now hospitality to Christ the stranger, that He may not disregard you as strangers at the judgment, but may receive you as His own into the kingdom.

Having spoken of love, he adds what is closely connected with love — "hospitality," which he commands to perform without grumbling; and to those who abound in every gift, he commands to share with a brother in need. For example, one who has the word …

The proper objects of Christian hospitality are one another. The nearness of their relation, and the necessity of their condition in those times of persecution and distress, obliged Christians to be hospitable one to another. Sometimes Christians were spoiled of all they had, and were driven away to distant countries for safety.