פּירוש אויף בראשית 18:13

האף אמנם means SHALL I REALLY BEAR?

I BEING OLD. This is the explanation of Sarah’s words, after I am waxed old.⁹⁸Verse 12 here. And G-d’s words [that Sarah had said, “I being old“], were true, but for the sake of peace He did not reveal what she also said, namely, My lord being old also,⁹⁸Verse 12 here. for [if He were quoting Sarah], He should have said, “I and my lord are old,” as Sarah had laughed concerning both of them.

'ויאמר ה, the angel, the senior of the three.

ואני זקנתי I BEING OLD — Scripture (God) in relating her words to her husband alters them for the sake of peace, for she had said (v. 12) “my lord is old” (Genesis Rabbah 48:18).