Genesis 18:8

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 fetched 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.