Genesis 18:10-14

¹⁰He said, “I will certainly return to you at this time next year; and behold, your wife Sarah will have a son.” And Sarah was listening at the tent door, which was behind him. ¹¹Now Abraham and Sarah were old, advanced in age; Sarah was past childbearing. ¹²So Sarah laughed to herself, saying, “After I have become old, am I to have pleasure, my lord being old also?” ¹³But the Lord said to Abraham, “Why did Sarah laugh, saying, ‘Shall I actually give birth to a child, when I am so old?’ ¹⁴Is anything too difficult for the Lord? At the appointed time I will return to you, at this time next year, and Sarah will have a son.”