Tafsiran Kejadian 18:13: Rashi, Ramban, Rashbam & Radak

וַיֹּ֥אמֶר יְהוָ֖ה אֶל־אַבְרָהָ֑ם לָ֣מָּה זֶּה֩ צָחֲקָ֨ה שָׂרָ֜ה לֵאמֹ֗ר הַאַ֥ף אֻמְנָ֛ם אֵלֵ֖ד וַאֲנִ֥י זָקַֽנְתִּי׃

Lalu Yang Mahakekal berfirman kepada Abraham, “Mengapa Sara tertawa dan berkata, ‘Benarkah aku masih akan melahirkan anak, padahal aku sudah tua?’

Rashi

האף אמנם means SHALL I REALLY BEAR?
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Ramban

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.
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Rashbam

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

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).
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