After partaking in a meal at Abraham's tent, the visiting guests turn to the primary purpose of their mission. This pivotal moment is layered with profound lessons in proper etiquette, personal modesty, and the essence of the blessing about to descend upon the household. The visitors begin by inquiring about Sarah's whereabouts. Since these guests are divine messengers, they already know where she is, prompting commentators to explore the true motive behind their question. One perspective suggests that the inquiry serves simply as a polite conversation starter, much like God asking Adam where he was in the Garden of Eden [רשב"ם, רב סעדיה גאון, ביאור יש"ר]. Another approach emphasizes that the core mission of the angels is to deliver the news of Isaac's impending birth directly to Sarah. Therefore, they ask for her so that she can hear the announcement herself and rejoice [ספורנו, אור החיים, בכור שור, אברבנאל]. Alternatively, the question is meant to highlight Sarah's modesty, thereby endearing her even more to her husband, or to ensure they can send her the customary cup of wine following the post-meal blessing [רש"י, רד"ק, שפתי חכמים]. Taking a more spiritual perspective, some explain that the question does not seek a physical location at all, but rather probes her spiritual standing: by what merit will she be blessed with a child? The implicit answer is the merit of her profound modesty [כלי יקר].
Abraham replies that she is inside the tent. The primary approach among commentators is that this reflects her exceptional modesty, as it was not considered appropriate for modest women to mingle directly with visiting guests [רד"ק, תורה תמימה, אברבנאל]. However, others detect a subtle shift from her usual routine in this response. Typically, Sarah was highly active in hosting and serving guests. On this particular day, however, her youth miraculously returned and she experienced a menstrual cycle, which required her to remain inside the tent rather than serve them [מלבי"ם, אלשיך, הכתב והקבלה]. Another explanation suggests that she remains hidden inside out of a deep sense of shame over being barren [שד"ל, אברבנאל].
A subtle notation of dots in the traditional text spells out the hidden phrase, "Where is he?" Commentators agree that such unique markings demand an interpretation beyond the surface level, revealing that just as the angels asked Abraham where Sarah was, they also asked Sarah where Abraham was [רש"י, רד"ק, חזקוני]. The specific placement of these markings ensures that the original question directed at Abraham remains intact, while seamlessly adding a hidden layer of inquiry directed at Sarah [חזקוני, דברי דוד, שפתי חכמים]. This mutual exchange establishes a timeless rule of etiquette: a guest should ask the host about his wife's wellbeing, and similarly ask the wife about her husband. This raises a difficulty, however, as traditional Jewish law generally discourages men from inquiring about a woman's wellbeing. Some resolve this by clarifying that the restriction only applies to sending greetings through a messenger, whereas a guest is permitted to ask a husband directly about his wife's location [ריב"א, מזרחי, לבוש האורה]. Others explain that the restriction is designed only for human beings who possess an evil inclination; angels are naturally exempt from such concerns, or they are permitted to ask purely for the sake of polite manners [מזרחי, גור אריה, פענח רזא].