Genesis 18:4

Then the two angels came to Sodom in the evening as Lot was sitting in the gate of Sodom. Lot saw them and rose to meet them and bowed down with his face to the ground.

And he said, “Come in, blessed of Yahweh! Why do you stand outside since I have prepared the house and a place for the camels?”

Then the man brought the men into Joseph’s house and gave them water, and they washed their feet; and he gave their donkeys fodder.

And turning toward the woman, He said to Simon, “Do you see this woman? I entered your house; you gave Me no water for My feet, but she has wet My feet with her tears and wiped them with her hair.

Then He *poured water into the washbasin, and began to wash the disciples’ feet and to wipe them with the towel which He had tied around Himself.

Do not neglect to show hospitality to strangers, for by this some have entertained angels without knowing it.