Genesis 18:1-3

Now the LORD appeared to Abraham by the terebinth trees of Mamre [in Hebron], while he was sitting at the tent door in the heat of the day. When he raised his eyes and looked up, behold, three men were standing [a little distance] from him. When he saw them, he ran from the tent door to meet them and bowed down [with his face] to the ground, and Abraham said, “My lord, if now I have found favor in your sight, please do not pass by your servant [without stopping to visit].