Shulchan Arukh, Orach Chayim 128:40-42

Sugya Map

This sugya delves into the intricate halakhot surrounding disqualifications for Birkat Kohanim, particularly focusing on the Kohen's marital status and the mechanisms for rehabilitation. The core tension lies between the inherent kedushat Kehuna and actions that compromise it, leading to a temporary or conditional forfeiture of priestly privileges.

• Core Issue: The disqualification of a Kohen who marries a gerusha (divorcée) and the specific, communal vow (neder al da'at rabim) required for his rehabilitation to perform Birkat Kohanim.
• Nafka Mina(s):
  • The precise definition and scope of kedushat Kehuna in relation to specific aveirot (transgressions), distinguishing between aveirot common to all Jews and those unique to Kohanim.
  • The interplay between individual vows (nedarim) and communal oversight (al da'at rabim) in halakhic rehabilitation, especially concerning the annulment of vows.
  • The practical implications for a Kohen who has married a gerusha, affecting not only Birkat Kohanim but also other kezayot kehuna (priestly entitlements).
  • The psak regarding a Kohen who, due to ones (duress), cannot divorce his gerusha wife.
• Primary Sources:
  • Shulchan Arukh, Orach Chayim 128:40-42.
  • Magen Avraham on Shulchan Arukh, Orach Chayim 128:57-59.
  • Yad Ephraim on Shulchan Arukh, Orach Chayim 128:4 (referring to Magen Avraham 128:58).
  • Ba'er Hetev on Shulchan Arukh, Orach Chayim 128:67-68.
  • Mishnah Berurah on Shulchan Arukh, Orach Chayim 128:147.
  • Talmud Bavli: Gittin 34a-35a, Bechorot 36a, Eruchin 23a, Menachot 109b.
  • Teshuvot HaRa'am (R' Akiva Eiger), Chelek 1, Siman 59.

Text Snapshot

The crux of our analysis lies in Shulchan Arukh, Orach Chayim 128:40, which states:

כהן שנשא גרושה אינו נושא את כפיו, ואין קדושה תופסת בו, אפילו לקרותו ראשון לתורה, ואפילו אם גירשה או מתה, הוא פסול עד שידור שלא יהנה מנשים האסורות לו על דעת רבים. A Kohen who married a divorcée may not raise his hands [for the Priestly Blessing], and holiness does not attach to him, even to call him up first to the Torah. And even if he divorced her or she died, he is disqualified until he vows not to derive benefit from women forbidden to him, with the public's consent. (Shulchan Arukh, Orach Chayim 128:40)

Dikduk/Leshon Nuance

The phrase "אין קדושה תופסת בו" is particularly striking. It suggests a profound abrogation of his priestly status, not merely a temporary suspension of Birkat Kohanim. The disqualification extends even to being called up first to the Torah, a lesser kezut Kehuna compared to Birkat Kohanim. This indicates a broader chiyuv (obligation) on the beit din to withhold kedusha from him, rather than just a personal psul (disqualification). The lashon "תופסת בו" (attaches to him) implies a positive act of kedusha not being able to "take hold" or manifest in him, underscoring the severity of his defilement of kedushat Kehuna.

Furthermore, the requirement "עד שידור שלא יהנה מנשים האסורות לו על דעת רבים" (until he vows not to derive benefit from women forbidden to him, with the public's consent) is the focus of much Acharonic discussion. The term "על דעת רבים" (with the public's consent) is not a common element in nedarim for rehabilitation, and its inclusion here signals a unique stringency, which the Acharonim will grapple with in terms of its rationale and mechanism. The vow is not merely to divorce the gerusha, but to commit to not benefiting from any forbidden women, suggesting a broader rehabilitation of his moral and halakhic conduct.

Readings

The Shulchan Arukh's ruling regarding the neder al da'at rabim for a Kohen who married a gerusha is a focal point for Acharonic inquiry, particularly concerning its underlying rationale. Why such a stringent measure, and what does "על דעת רבים" truly accomplish?

Magen Avraham: The Necessity of Public Consent

The Magen Avraham (OC 128:58) directly confronts the kushya posed by the Sefer Beis Hillel (at the end of Menachot): Why is a neder al da'at rabim necessary here? If we follow the halakhic principle that to annul a vow, one must specify its se'iba (reason) – as articulated by Rambam and Rashba and generally accepted in psak (see Yoreh De'ah 228:14) – then a Kohen who vowed not to marry a gerusha (or any pesula) would be asked his se'iba by a chakham (sage). Upon hearing the Kohen's reason ("because I am a Kohen and such a marriage is forbidden to me"), the chakham would obviously refuse annulment. So, what unique protection does "על דעת רבים" offer?

The Magen Avraham proposes two distinct terutzim to resolve this:

1. Concern for a Deviant Chakham: The first terutz suggests a gzeira (preventative enactment) against the possibility that the Kohen might approach a chakham who does not hold that one must specify the se'iba for annulment. This chakham might then annul the vow, leading the Kohen back to his transgression. The Magen Avraham references a machloket Amoraim on this point, implying that while Rambam and Rashba rule stringently, other opinions might exist which a rogue chakham could adopt. By making the vow "על דעת רבים," the annulment becomes impossible lekhatchila (ab initio), as no chakham could unilaterally override a communal decision. This terutz views "על דעת רבים" as a safeguard against halakhic loopholes exploited by heterodox poskim.
2. Ambiguity in "Specifying the Vow": The Magen Avraham's second terutz offers a more nuanced understanding of the machloket itself. He points to Tosafot in Eruchin 23a, which understands "specifying the vow" (לפרט הנדר) to mean merely stating the lashon (wording) of the vow, not its underlying se'iba. For example, if one vowed "not to eat bread," specifying the vow would be "I vowed not to eat bread," without needing to explain why he made that vow. If a chakham adheres to this interpretation of Tosafot, then when the Kohen states, "I vowed not to marry a gerusha," the chakham (unaware of the Kohen's Kehuna) might annul it, believing it to be a simple personal vow. The Shulchan Arukh and Rashba, though personally agreeing that se'iba is necessary for annulment, are concerned that the Kohen might find a chakham who follows Tosafot's more lenient approach to "specification." Thus, the neder al da'at rabim becomes a necessary takanah to ensure the vow's permanence, irrespective of the particular chakham's interpretation of hakarah (annulment). This terutz is particularly compelling as it addresses a genuine halakhic ambiguity rather than just a fear of chakhamim deviating from accepted psak.

The Magen Avraham then contrasts this with the case of a widow in Gittin 34a who vows not to benefit from "fruits of the world" if she already collected her ketubah. There, the Magen Avraham notes, a neder al da'at rabim is not required. He initially suggests that matters of issur (prohibition) are treated more stringently than mamon (monetary) matters. However, his second terutz better explains the distinction: in the Gittin case, the lashon of the vow itself ("all the fruits of the world I may not benefit from if I took from the assets already") inherently reveals its se'iba (preventing double payment), making annulment unlikely even by a chakham who only requires the lashon. In contrast, a Kohen's vow "not to marry a gerusha" does not inherently reveal his Kehuna, hence the need for "על דעת רבים" to preclude annulment.

The Magen Avraham also briefly mentions the Ra'am (R' Akiva Eiger, Teshuvot 1:59) regarding a Kohen under ones nefashot (duress) who cannot divorce his gerusha. The Ra'am holds that even under such duress, and even if he vows not to benefit from her, he cannot perform Birkat Kohanim. The Magen Avraham expresses astonishment at this, referencing Gittin 35a which suggests "נודר ועובד יורד ומגרש" (one vows and serves, then descends and divorces) as a possibility in other contexts. This highlights a further stringency concerning Birkat Kohanim – the disqualification is not merely about the act of marriage, but the continued status of being married to a pesula, even if passively.

Yad Ephraim: Elucidating the Magen Avraham

The Yad Ephraim (OC 128:4, on Magen Avraham 128:58) expands upon the Magen Avraham's second terutz, which focuses on the interpretation of "specifying the vow." He reaffirms that the Rashba and Shulchan Arukh indeed require specifying the se'iba (reason) for annulment. However, the concern is that a Kohen might encounter a chakham who follows Tosafot's view in Eruchin 23a, which only requires stating the lashon of the vow. In such a scenario, the Kohen would simply state, "I vowed not to marry a gerusha," and the chakham, unaware of his Kehuna, might annul it.

The Yad Ephraim meticulously explains that the takanah of "על דעת רבים" serves as a blanket protection against any annulment, regardless of the chakham's shitah (halakhic opinion) on the necessity of specifying the se'iba. This is because a vow made "על דעת רבים" is intrinsically stronger; it's a public commitment that transcends individual hakarah processes. The Yad Ephraim then reiterates the distinction from the Gittin case: there, the lashon of the vow (e.g., "I will not derive benefit from the world") is inherently tied to the se'iba (that she already collected her ketubah), making it obvious to any chakham that it should not be annulled. In the Kohen's case, the vow "not to marry a gerusha" does not inherently reveal his Kehuna, thus necessitating the "על דעת רבים" clause.

He concludes by emphasizing that since some takanah was needed for the Kohen's vow (given the halakhic ambiguity and the severity of the transgression), the Sages opted for the strongest form – "על דעת רבים" – to definitively preempt all concerns. This is contrasted with the almana case where the vow itself was sufficient without the communal aspect.

Ba'er Hetev: Scope and Additional Stringencies

The Ba'er Hetev (OC 128:67-68) reinforces the Shulchan Arukh's ruling and clarifies its scope. He states that the disqualification applies not only to a gerusha but also to a chalutza (woman who performed chalitza) or a zona (prostitute), as these are also forbidden to a Kohen. He explicitly quotes the Ra'am (R' Akiva Eiger, Teshuvot 1:59) concerning the Kohen who cannot divorce his pesula wife due to ones nefashot. The Ba'er Hetev agrees with the Ra'am that such a Kohen cannot perform Birkat Kohanim, even if he vows not to benefit from her. He then critically notes that the Magen Avraham did not seem to have seen the Ra'am's words in their original context, which would have clarified the Ra'am's own resolution to the kushya from Gittin 35a. This highlights a textual-critical observation within the Acharonim, where one posek critiques another's engagement with a source.

The Ba'er Hetev also cites the Mahari HaLevi (Siman 53) regarding a Kohen who denied his Kehuna and married a pesula. Even if he later divorces her and takes the required vow, he is still disqualified from Birkat Kohanim and other kezayot kehuna. This is a significant additional stringency, suggesting that denying one's Kehuna adds another layer of psul that even the prescribed takanah cannot fully rectify, perhaps due to the chillul Hashem (desecration of God's Name) or the fundamental rejection of his priestly identity.

Mishnah Berurah: Mid'Rabanan Disqualification

The Mishnah Berurah (OC 128:147) provides a crucial clarification regarding the nature of the disqualification for a Kohen who marries a gerusha (or chalala, zona, chalutza). He states that this disqualification is mid'Rabanan (by rabbinic decree). This is a vital point for understanding the halakhic framework: while the marriage itself is a lav (prohibition) from the Torah, the consequence of disqualification from Birkat Kohanim and other priestly privileges, and the mechanism of rehabilitation through a neder al da'at rabim, are mid'Rabanan.

He distinguishes this from other aveirot mentioned earlier in the siman (e.g., a Kohen who is a general rasha or ba'al aveira) who are not disqualified from Birkat Kohanim. The Mishnah Berurah explains that the difference lies in the nature of the transgression: "אבל במה שהכהנים מוזהרים יותר מישראל שקדושת כהנים גרם לו והוא חיללו לפיכך פסול מדרבנן לכל דבר כהונה עד שידור ע"ד רבים וכו'" (But in matters where Kohanim are warned more than Israelites, where the sanctity of Kohanim caused him [to be warned], and he desecrated it, therefore he is disqualified mid'Rabanan for all matters of Kehuna until he vows with the public's consent, etc.). This means that transgressions that specifically violate the unique kedusha of a Kohen (like marrying a gerusha) incur a mid'Rabanan disqualification, whereas general transgressions do not. This distinction underscores the unique hashra'at Shekhina (Divine Presence) that rests upon the Kohanim during Birkat Kohanim, demanding a higher standard of kedusha in matters specific to their priestly role.

Friction

The most potent kushya (difficulty) in this sugya is precisely the one articulated by the Sefer Beis Hillel (quoted by Magen Avraham OC 128:58): Why does the Shulchan Arukh require a Kohen who married a gerusha to make a neder al da'at rabim (a vow with public consent) to regain his priestly privileges? This seems like an excessive stringency if we assume the generally accepted psak that for a vow to be annulled (hakarah), the chakham (sage) must be informed of the se'iba (reason) for the vow.

The Strongest Kushya

The kushya unfolds as follows:

1. General Principle of Vow Annulment: It is a widely accepted halakhic principle, rooted in Gemara Bechorot 36a and codified by Rambam and Rashba (and implicitly by Shulchan Arukh Yoreh De'ah 228:14), that a chakham requires knowledge of the se'iba – the underlying circumstances or motivations – that led to the making of a vow, in order to properly evaluate grounds for annulment. Without knowing why the vow was made, the chakham cannot determine if a petach (opening) or charata (regret) exists that would justify its nullification.
2. Application to the Kohen's Vow: In our case, the Kohen vows "not to derive benefit from women forbidden to him." If such a Kohen were to seek annulment, he would necessarily inform the chakham of his se'iba: "I made this vow because I am a Kohen, and it is forbidden for me to marry a gerusha or other pesulot, and I wish to rehabilitate my status to perform Birkat Kohanim."
3. Inviability of Annulment: Given this se'iba, no chakham adhering to the halakha would annul such a vow. The vow is not based on a mistaken premise or a change of heart about a permissible matter; rather, it is a commitment to uphold a fundamental Torah prohibition (issur Kehuna). Annulling it would be tantamount to sanctioning a transgression, which no chakham would do.
4. Redundancy of "על דעת רבים": Therefore, if the Kohen's vow is inherently un-annullable due to its se'iba, what additional preventative measure does "על דעת רבים" provide? The public consent clause makes a vow unbreakable even by a chakham, but if it's already unbreakable through the se'iba mechanism, then "על דעת רבים" seems superfluous – a gzeira le'gzeira (a decree upon a decree) that is generally avoided in halakha unless absolutely necessary. This is the core kushya: why the extra layer of stringency when the established halakhic framework for vows already seems to sufficiently protect the Kohen's commitment?

The Best Terutz (or Two)

The Magen Avraham (OC 128:58), as discussed in our "Readings" section, provides the most robust terutzim to this kushya. Both of his answers acknowledge the perceived redundancy and offer explanations rooted in the need for an airtight takanah (rabbinic enactment) to safeguard the sanctity of Kehuna.

Terutz 1: Fear of a Deviant Chakham (Safeguarding Against Heterodoxy)

The first terutz posits that the takanah of "על דעת רבים" is a gzeira against the possibility that the Kohen might encounter a chakham who, for whatever reason, deviates from the accepted psak concerning hakarah. The Magen Avraham notes that there is a machloket Amoraim regarding whether one needs to specify the se'iba to annul a vow. While Rambam and Rashba rule that se'iba is necessary, there might be other chakhamim (or lesser-known opinions) who would annul a vow merely based on its lashon (wording), without delving into the Kohen's priestly status.

In this scenario, a Kohen could approach such a chakham and simply state, "I vowed not to marry a gerusha," without volunteering his Kohen status. The chakham, unaware of the underlying issur Kehuna, might find a petach based on a change of mind or regret regarding a seemingly personal vow, and annul it. The consequence would be the Kohen reverting to his forbidden marriage and desecrating his Kehuna. By requiring "על דעת רבים," the vow becomes non-annullable by any individual chakham, effectively closing this potential loophole and ensuring the Kohen's rehabilitation is permanent and universally recognized. This terutz highlights the Sages' concern not just for the ideal halakhic process, but for its practical application in a world where poskim might hold differing opinions or where individuals might seek to exploit halakhic ambiguities. It's a pragmatic stringency designed to ensure conformity and prevent chillul Hashem.

Terutz 2: Ambiguity in the Definition of "Specifying the Vow" (Reconciling Rishonim)

The second terutz by the Magen Avraham (and elaborated upon by the Yad Ephraim) is arguably more intellectually satisfying, as it addresses a genuine halakhic ambiguity rather than simply a fear of error. This terutz focuses on the machloket cited by Tosafot in Eruchin 23a. Tosafot there understands "specifying the vow" (לפרט הנדר) to mean merely stating the exact wording (lashon) of the vow, not its se'iba. For instance, if one vowed, "I will not eat bread," specifying the vow would be to repeat "I will not eat bread," not to explain why one made that vow.

The Magen Avraham then suggests that while the Rashba and Shulchan Arukh themselves hold that se'iba is necessary for annulment (as per Yoreh De'ah 228:14), they are concerned that the Kohen might approach a chakham who follows Tosafot's interpretation. Such a chakham would only require the Kohen to state the lashon of his vow: "I vowed not to marry a gerusha." Since this lashon does not explicitly state his Kohen status or the underlying prohibition, the chakham would treat it as any other personal vow. Without knowledge of the se'iba (his Kehuna and the issur), the chakham might find a petach and annul the vow, not realizing he is thereby sanctioning a Torah transgression.

Thus, the requirement for "על דעת רבים" is a takanah that effectively bypasses this machloket among Rishonim regarding the definition of "specifying the vow." By making it a public vow, it attains a status that cannot be unilaterally annulled by any chakham, irrespective of their interpretation of hakarah. This ensures that the Kohen's commitment to avoid forbidden women, which is essential for his priestly rehabilitation, remains perpetually binding. This terutz provides a deep insight into the halakhic process, where takanot are sometimes enacted not just to prevent obvious transgressions, but to navigate complex machloktot in the Gemara and Rishonim, ensuring the most stringent outcome for matters of kedusha.

Intertext

The sugya of a Kohen's disqualification and rehabilitation through a neder al da'at rabim is deeply interwoven with other foundational sugyot concerning vows, priestly sanctity, and communal oversight.

Gittin 34a-35a: The Widow's Vow and Communal Involvement

Perhaps the most direct and illuminating intertext is the sugya in Gittin 34a-35a concerning a widow's vow. The Gemara there discusses a widow who claims her ketubah (marriage contract settlement) from her deceased husband's estate. To ensure she doesn't remarry and claim ketubah from a second husband (or claim ketubah from her first husband again), the beit din makes her vow "שלא תהנה מכל פירות העולם" (that she will not benefit from all the fruits of the world) if she remarries or if she has already collected her ketubah. The Gemara then raises the question: why isn't this vow considered "נדרי שווא" (a vain vow) that can be easily annulled? The answer given is that since the beit din is involved in the vow, it cannot be annulled. Rashi explains that the beit din's involvement makes it "נדר על דעת רבים" (a vow with public consent), which is intrinsically stronger and cannot be annulled by an individual chakham.

Parallel: The parallel to our sugya is striking: both involve a vow intended to prevent a halakhic transgression (or an illegitimate financial claim) and both involve the concept of "על דעת רבים" to strengthen the vow against annulment. The Magen Avraham (OC 128:58) explicitly references this sugya when questioning the necessity of "על דעת רבים" for the Kohen.

Friction/Distinction: The Magen Avraham and Yad Ephraim meticulously distinguish between the two cases. In the Gittin case, the lashon of the vow itself ("all the fruits of the world...") coupled with the context of ketubah collection, inherently reveals its se'iba (to prevent fraud). Thus, any chakham would understand its purpose and refuse annulment, even if they only required the lashon of the vow for hakarah. Therefore, the explicit "על דעת רבים" is not strictly necessary for annulment prevention but rather for the beit din to enforce the vow as a matter of public policy. In the Kohen's case, however, the vow "not to marry a gerusha" does not inherently reveal the Kohen's status or the underlying prohibition. Hence, the specific communal consent is vital to protect against a chakham who might follow Tosafot's view (Eruchin 23a) that only the lashon of the vow needs to be specified for annulment, leading them to annul the vow unknowingly. The distinction highlights that "על דעת רבים" is not a uniform solution but a precise takanah tailored to specific halakhic vulnerabilities.

Kedushat Kehuna (Vayikra 21): The Foundational Source of Priestly Sanctity

The entire sugya is predicated on the unique and elevated status of Kedushat Kehuna, as delineated in Vayikra Chapter 21. This chapter details the specific prohibitions incumbent upon Kohanim, particularly concerning marriage: "אשה זונה וחללה לא יקחו ואשה גרֻשה מאישה לא יקחו כי קדוש הוא לאלהיו" (Leviticus 21:7 – "A harlot or a profaned woman they shall not take, nor shall they take a woman divorced from her husband, for he is holy to his God"). The Birkat Kohanim itself is a direct fulfillment of the command: "כֹּה תְבָרְכוּ אֶת בְּנֵי יִשְׂרָאֵל אָמוֹר לָהֶם" (Bamidbar 6:23 – "Thus shall you bless the children of Israel, saying to them").

Interconnection: The Shulchan Arukh's ruling in OC 128:40, that a Kohen who marries a gerusha is disqualified from Birkat Kohanim and that "אין קדושה תופסת בו," directly reflects the severe breach of Kedushat Kehuna mandated by the Torah. The mid'Rabanan disqualification (as clarified by Mishnah Berurah 128:147) and the stringent requirement of neder al da'at rabim are rabbinic safeguards designed to reinforce and protect this Torah-level sanctity. The Sages understood that while the marriage itself is a Torah transgression, the public performance of Birkat Kohanim by a Kohen who has violated his special kedusha would constitute a chillul Hashem (desecration of God's Name) and undermine the very essence of the blessing, which channels divine blessings through sanctified agents. The takanah is thus an attempt to realign the Kohen's actions and status with his inherent, God-given kedusha.

Even Ha'ezer 6: Broader Implications of a Kohen's Forbidden Marriage

The Magen Avraham (OC 128:58) references Even Ha'ezer Siman 6, where the Beit Yosef discusses at length a Kohen who married a woman forbidden to him. Even Ha'ezer deals with the legal aspects of marriage and divorce.

Connection: This cross-reference emphasizes that the disqualification from Birkat Kohanim is but one facet of a broader halakhic consequence. A Kohen's marriage to a gerusha has significant ramifications across various domains of halakha, affecting his personal status, the validity of his marriage in certain respects, and the status of any children born from such a union (who would be chalalim). The sugya in Orach Chayim isolates the impact on Birkat Kohanim as a distinct priestly privilege, but it is crucial to remember that this specific psul is part of a larger web of consequences stemming from the violation of Kedushat Kehuna. The neder al da'at rabim attempts to address the personal rehabilitation required for the Kohen to function in his priestly capacity, even if the underlying marital status (if he cannot divorce) has other, persistent halakhic implications.

Psak/Practice

The sugya concerning a Kohen who married a gerusha and his subsequent disqualification and rehabilitation provides several crucial psak heuristics and insights into practical halakha.

1. Scope of Disqualification: The Shulchan Arukh (OC 128:40) unequivocally states that a Kohen who married a gerusha is disqualified not only from Birkat Kohanim but also from other kezayot kehuna, such as being called up first to the Torah. The phrase "אין קדושה תופסת בו" underscores the severity; it's a fundamental breach of his priestly status. This disqualification persists even if the gerusha is divorced or dies, demonstrating that the act itself leaves a lasting blemish that requires active rectification. The Ba'er Hetev (OC 128:67) expands this to include chalutza and zona, confirming a broad application to all women forbidden to Kohanim.
2. The Neder Al Da'at Rabim as the Sole Remedy: The Shulchan Arukh prescribes a specific and stringent remedy: the Kohen must vow "שלא יהנה מנשים האסורות לו על דעת רבים" (not to derive benefit from women forbidden to him, with the public's consent). This is not merely a private undertaking but a public declaration that, as the Magen Avraham (OC 128:58) and Yad Ephraim (OC 128:4) explain, makes the vow unbreakable by any chakham, safeguarding against halakhic loopholes or differing interpretations of hakarah (vow annulment). In contemporary practice, such a vow would require the explicit presence and consent of a beit din and perhaps a communal representative.
3. Distinction of Mid'Rabanan Disqualification: The Mishnah Berurah (OC 128:147) clarifies that the disqualification itself is mid'Rabanan, applying specifically to transgressions that violate the unique kedusha of a Kohen. This is a vital meta-psak heuristic: understanding the source of a prohibition (Torah vs. Rabbinic) often informs the stringency of its application and the mechanisms of repentance or rehabilitation. For aveirot unique to Kohanim, where their kedusha is directly compromised, the Sages enacted stringent measures to protect the integrity of their role, especially in public rituals like Birkat Kohanim. Other general transgressions, even severe ones, do not necessarily disqualify a Kohen from Birkat Kohanim (OC 128:40).
4. The Case of Ones Nefashot (Duress): The Ra'am (R' Akiva Eiger, Teshuvot 1:59, quoted by Ba'er Hetev OC 128:67) rules that even a Kohen who is unable to divorce his pesula wife due to ones nefashot (life-threatening duress) cannot perform Birkat Kohanim, even if he takes the vow not to benefit from her. This is a significant psak, indicating that the physical state of being married to a forbidden woman, even under duress, creates a psul that cannot be fully overcome for Birkat Kohanim. The Magen Avraham's initial astonishment at this ruling (OC 128:59) highlights its stringency, but the Ba'er Hetev suggests the Ra'am had a more nuanced position. Practically, this means a Kohen in such an unfortunate situation would remain disqualified.
5. Denial of Kehuna: The Mahari HaLevi (Siman 53, quoted by Ba'er Hetev OC 128:68) adds another layer: a Kohen who denied his Kehuna and married a pesula is permanently disqualified even if he divorces and takes the vow. This indicates that a public denial of one's priestly identity creates an even deeper psul than the marriage itself, perhaps due to the chillul Hashem or the fundamental rejection of his role. This psak would make rehabilitation for such a Kohen exceedingly difficult, if not impossible.

In contemporary practice, a Kohen who married a gerusha would, in most communities, be expected to divorce her and, if he wished to resume priestly functions, undertake this special neder al da'at rabim. The rarity of such a public vow today perhaps reflects both a greater awareness of the prohibition and the difficulty of undergoing such a public rehabilitation process. The emphasis remains on upholding the unique sanctity of the Kohen, particularly in the sacred act of Birkat Kohanim.

Takeaway

This sugya masterfully illustrates the Sages' unwavering commitment to safeguarding Kedushat Kehuna through stringent takanot. The requirement of a neder al da'at rabim reveals a profound halakhic calculus, navigating machloktot among Rishonim and anticipating potential loopholes to ensure the integrity of priestly functions.