Genesis 18
10 Ref He said, "I will certainly return to you when the season comes round. Behold, Sarah your wife will have a son." Sarah heard in the tent door, which was behind him.
11 Ref Now Abraham and Sarah were old, well advanced in age. It had ceased to be with Sarah after the manner of women.
12 Ref Sarah laughed within herself, saying, "After I have grown old will I have pleasure, my lord being old also?"
13 Ref Yahweh said to Abraham, "Why did Sarah laugh, saying, 'Will I really bear a child, yet I am old?'
14 Ref Is anything too hard for Yahweh? At the set time I will return to you, when the season comes round, and Sarah will have a son."