Genesis 18:10-12

He said, “I will surely return to you at this time next year; and behold, Sarah your wife will have a son.” And Sarah was listening at the tent door, which was behind him. [Rom 9:9-12] Now Abraham and Sarah were old, well advanced in years; she was past [the age of] childbearing. So Sarah laughed to herself [when she heard the LORD’S words], saying, “After I have become old, shall I have pleasure and delight, my lord (husband) being also old?” [1 Pet 3:6]