Genesis 18:11-14

11Now aAbraham and Sarah were old, advanced in years. The way of women had ceased to be with Sarah. 12 bSo Sarah laughed to herself, saying, cAfter I am worn out, and dmy lord is old, shall I have pleasure?” 13The Lord said to Abraham, “Why did Sarah laugh and say, ‘Shall I indeed bear a child, now that I am old?’ 14 eIs anything too hard
Or wonderful
for the Lord? gAt the appointed time I will return to you, about this time next year, and Sarah shall have a son.”

Genesis 21:2

2And Sarah hconceived and bore Abraham a son in his old age iat the time of which God had spoken to him.
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