Genesis 18:10-12

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?”