7 And Abraham ran to the herd and brought a calf tender and good and gave it to the young man [to butcher]; then he [Abraham] hastened to prepare it.
8 And he took curds and milk and the calf which he had made ready, and set it before [the men]; and he stood by them under the tree while they ate.
9 And they said to him, Where is Sarah your wife? And he said, [She is here] in the tent.
10 [The Lord] said, I will surely return to you when the season comes round, and behold, Sarah your wife will have a son. And Sarah was listening and heard it at the tent door which was behind Him. [Rom 9:9-12]