Genesis 18:9-15

9“Where is your wife Sarah?” they asked him. “There, in the tent,” he answered.

10The Lord said, “I will certainly come back to you in about a year’s time, and your wife Sarah will have a son!” Now Sarah was listening at the entrance of the tent behind him.

11Abraham and Sarah were old and getting on in years. Sarah had passed the age of childbearing.

12So she laughed to herself: “After I am worn out and my lord is old, will I have delight?”

13But the Lord asked Abraham, “Why did Sarah laugh, saying, ‘Can I really have a baby when I’m old?’

14Is anything impossible for the Lord? At the appointed time I will come back to you, and in about a year she will have a son.”

15Sarah denied it. “I did not laugh,” she said, because she was afraid. But he replied, “No, you did laugh.”