Genesis 18:10
King James Version
“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 in the tent door, which behind him.”
Context
7And Abraham ran unto the herd, and fetcht a calf tender and good, and gave unto a young man; and he hasted to dress it.
8And he took butter, and milk, and the calf which he had dressed, and set before them; and he stood by them under the tree, and they did eat.
9And they said unto him, Where Sarah thy wife? And he said, Behold, in the tent.
10And 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 in the tent door, which behind him.
11Now Abraham and Sarah old well stricken in age; it ceased to be with Sarah after the manner of women.
12Therefore Sarah laughed within herself, saying, After I am waxed old shall I have pleasure, my lord being old also?
13And the LORD said unto Abraham, Wherefore did Sarah laugh, saying, Shall I of a surety bear a child, which am old?