Genesis 18:7

4 Let a little water, I pray you, be fetched, and wash your feet, and rest yourselves under the tree:

5 And I will fetch a morsel of bread, and comfort ye your hearts; after that ye shall pass on: for therefore are ye come to your servant. And they said, So do, as thou hast said.

6 And Abraham hastened into the tent unto Sarah, and said, Make ready quickly three measures of fine meal, knead [it], and make cakes upon the hearth.

7 And Abraham ran unto the herd, and fetcht a calf tender and good, and gave [it] unto a young man; and he hasted to dress it.

8 And he took butter, and milk, and the calf which he had dressed, and set [it] before them; and he stood by them under the tree, and they did eat.

9 And they said unto him, Where [is] Sarah thy wife? And he said, Behold, in the tent.

10 And he said, I will certainly return unto thee according to the time of life; and, lo, Sarah thy wife shall have a son. And Sarah heard [it] in the tent door, which [was] behind him.