Bereshis 18:10-12

Orthodox Jewish Bible

¹⁰ And He said, I will certainly return unto thee at this time next year; and, hinei, Sarah thy wife shall have ben (son). And Sarah heard it in the entrance of the ohel, which was behind him.

¹¹ Now Avraham and Sarah were zekenim (old ones) and well stricken in age; and [in childbearing] it ceased to be with Sarah after the manner of women.

¹² Therefore Sarah laughed [titzchak, sounds like Yitzchak] within herself, saying, After I am grown old shall I have pleasure, adoni being old also?