Genesis 18:8-12
English Standard Version
9They said to him, "Where is Sarah your wife?" And he said, "She is in the tent."
10The Lord said, "I will surely return to you about this time next year, and Sarah your wife shall have a son." And Sarah was listening at the tent door behind him.
11Now Abraham and Sarah were old, advanced in years. The way of women had ceased to be with Sarah.
12So Sarah laughed to herself, saying, "After I am worn out, and my lord is old, shall I have pleasure?"