Genesis 18:10-14

10One of them said, “I will surely return to you when the season comes round again, and your wife Sarah will have a son!” (Now Sarah was listening at the entrance to the tent, not far behind him.

11Abraham and Sarah were old and advancing in years; Sarah had long since passed menopause.)

12So Sarah laughed to herself, thinking, “After I am worn out will I have pleasure, especially when my husband is old too?”

13The Lord said to Abraham, “Why did Sarah laugh and say, ‘Will I really have a child when I am old?’

14Is anything impossible for the Lord? I will return to you when the season comes round again and Sarah will have a son.”