[18:13] 1 tn Heb “Why, this?” The demonstrative pronoun following the interrogative pronoun is enclitic, emphasizing the Lord’s amazement: “Why on earth did Sarah laugh?”
[18:13] 2 tn The Hebrew construction uses both הַאַף (ha’af) and אֻמְנָם (’umnam): “Indeed, truly, will I have a child?”