Genesis 18:2-6

2And he lifted up his eyes and saw, and behold, three men standing near him. And when he saw [them], he ran to meet them from the tent-door, and bowed himself to the earth,

3and said, Lord, if now I have found favour in thine eyes, pass not away, I pray thee, from thy servant.

4Let now a little water be fetched, that ye may wash your feet, and rest yourselves under the tree.

5And I will fetch a morsel of bread; and refresh yourselves; after that ye shall pass on; for therefore have ye passed on towards your servant. And they said, So do as thou hast said.

6And Abraham hastened into the tent to Sarah, and said, Knead quickly three seahs of wheaten flour, and make cakes.