Genesis 18

10 And he said, I will certainly return to thee at this time of the year, and behold, Sarah thy wife shall have a son. And Sarah was listening at the tent-door, which was behind him. 11 Now Abraham and Sarah were old and advanced in age: it had ceased to be with Sarah after the manner of women. 12 And Sarah laughed within herself, saying, After I am become old, shall I have pleasure, and my lord old?