The Torah speaks of Abraham’s extraordinary qualities of kindness and hospitality:
"Abraham established an eshel [an inn for wayfarers] at Beersheba. And he called there the name of the Eternal, God of the universe" (Gen. 21:33).
But how did Abraham’s simple inn become a powerful means of publicizing God’s name to all who passed through? What made this act of hospitality a vehicle for bringing visitors to belief in the Creator?
The Blind Man's Mistake
At a particular home, the seating arrangement and method of serving food at the dinner table were carefully planned. The host would serve the guest next to him, who would then pass the food to the next, and so on, until everyone had been served.
One evening, the family welcomed several new guests, including a blind man who was seated at the farthest end of the table.
When the food finally reached him, the blind man turned to the guest beside him and said, “Thank you so much for taking care of me.”
The other guest stared at him, a mixture of surprise and confusion on his face. "What do you mean? Do you think this food is mine?"
"No, my friend," he continued, "it belongs to the owner of the house. I’m just another guest here, passing the food along, same as you.”
Abraham’s Inn and its Spiritual Lesson 
Abraham was renowned not only for his hospitality but also for the deeper message he imparted through the meals at his inn.
After his guests had eaten, many, moved by the generosity they had experienced, wished to thank Abraham for his kindness. But Abraham, ever humble, would gently correct them: “Do you think I am the one who provided the food you’ve eaten? Like you, I am merely a guest in this world. The true Owner of this feast, the One who provides for all our needs, is the Master of this house. He is the One who spoke and the world came into being” (Sotah 10a).
Abraham’s table didn’t just satisfy his guests' hunger. It opened their hearts to a greater awareness of the God of the universe, who provided their every need.
(Meshalim ve-gam Sipurim, p. 32)
