Genesis 18:12 KJV
Therefore Sarah laughed within herself, saying, After I am waxed old shall I have pleasure, my lord being old also?
Genesis 18:10–14 KJV Chapter Context
10
And he said, I will certainly return unto thee according to the time of life; and, lo, Sarah thy wife shall have a son. And Sarah heard it in the tent door, which was behind him.
11
Now Abraham and Sarah were old and well stricken in age; and it ceased to be with Sarah after the manner of women.
12
Therefore Sarah laughed within herself, saying, After I am waxed old shall I have pleasure, my lord being old also?
13
And the LORD said unto Abraham, Wherefore did Sarah laugh, saying, Shall I of a surety bear a child, which am old?
14
Is any thing too hard for the LORD? At the time appointed I will return unto thee, according to the time of life, and Sarah shall have a son.