The dramatic oath ceremony of the suspected wife concludes with a vivid description of the water's physical impact and her public acceptance of the judgment. While the water administered during this ritual is commonly understood as bringing a curse, its fundamental nature can be viewed differently. Rather than being inherently harmful, the water serves as an agent of illumination. Its purpose is to spread light, clarify the truth, and clearly distinguish between purity and impurity [שד״ל].
If guilt is present, the water causes severe physical consequences, specifically the swelling of the belly and the falling of the thigh [רש״י, אבן עזרא, ביאור שטיינזלץ]. Interestingly, these physical afflictions are described in general terms rather than being explicitly attributed to the woman's body. Commentators agree that this subtle shift indicates that the punishment applies equally to the adulterous man. The waters examine and strike him exactly as they do the woman [רש״י, שפתי כהן, מלבי״ם]. Furthermore, the physical affliction begins with the belly rather than the thigh. Although the transgression may have initiated with the thigh, the core act of the sin took place in the belly, dictating where the punishment must begin [ברכת אשר]. There is also an underlying assurance that even a pregnant woman partakes in the ritual without fear that the water will cause an unjustified miscarriage [פענח רזא].
A crucial element of the ceremony is the woman's verbal participation. The oath must be spoken aloud, meaning that a deaf or mute woman cannot undergo the ritual since she is unable to voice her declaration [תורה תמימה]. Upon hearing the oath, the woman responds with a double affirmation. In Jewish legal proceedings, answering "Amen" after an oath is treated as if the person had spoken the entire oath themselves. Through this response, the woman completely surrenders her being to God's judgment [תורה תמימה, צפנת פענח, רש״ר הירש].
The repetition of her affirmation has sparked various explanations. Some view it simply as a means of emphasis and strengthening [אבן עזרא, ביאור שטיינזלץ]. Others suggest the duality corresponds to the two distinct parts of the ritual: one affirmation for the oath declaring her innocence, and a second for the conditional curse should she be guilty [רש״י, ספורנו, תורה תמימה]. Alternatively, the two affirmations might correspond to the two physical punishments, the swelling of the belly and the falling of the thigh [פענח רזא]. Another perspective connects the repetition to time, representing an acceptance of innocence in the past alongside a commitment to remain faithful in the future [חזקוני, תורה תמימה].
The primary approach among commentators is that the double affirmation serves to legally expand the scope of the oath well beyond the immediate suspicion. The woman affirms her innocence not only regarding the specific man her husband suspected, but regarding any other man. This expansion even reaches back in time to periods before her full marriage, such as her betrothal or while waiting for a levirate marriage. The profound concept underlying this legal expansion is that once a person is brought before God's judgment over a specific doubt, their faithfulness and righteousness across all their relationships and history are subjected to divine scrutiny [רש״י, חזקוני, רש״ר הירש, ומפרשי רש״י].