Genesis 18:10

10 Then one said, "I will surely return to you in due season, and your wife Sarah shall have a son." And Sarah was listening at the tent entrance behind him.

Genesis 18:10 In-Context

8 Then he took curds and milk and the calf that he had prepared, and set it before them; and he stood by them under the tree while they ate.
9 They said to him, "Where is your wife Sarah?" And he said, "There, in the tent."
10 Then one said, "I will surely return to you in due season, and your wife Sarah shall have a son." And Sarah was listening at the tent entrance behind him.
11 Now Abraham and Sarah were old, advanced in age; it had ceased to be with Sarah after the manner of women.
12 So Sarah laughed to herself, saying, "After I have grown old, and my husband is old, shall I have pleasure?"
New Revised Standard Version Bible, copyright 1989, Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved.