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Circumcision in the Talmud
The Talmud, the most important collection of the Oral Law, discusses circumcision many times. Here are several representative, fascinating, strange, and disturbing examples. The ancient rabbis view circumcision as a very important commandment, one which often but not always takes precedence over other commandments. To the ancient rabbis, circumcision marks (male) Jewishness, demonstrates faith, and has cosmic consequences. Since these voices have helped shape our tradition, understanding some of their perspective is crucial for us our thinking about circumcision today.
Questions to consider:
1. How do the ancient rabbis relate to circumcision? Is there a difference based on whether a text is halakhic (legal) or aggadic (narrative)?
2. What reasons does the Talmud give for circumcision, and what might motivate them?
3. How does circumcision stack up against other laws, for general order of priority and when exceptions need to be made?

וְכָל צָרְכֵי מִילָה עוֹשִׂין בְּשַׁבָּת:

רַבִּי אֱלִיעֶזֶר אוֹמֵר, אִם לֹא הֵבִיא כְלִי מֵעֶרֶב שַׁבָּת, מְבִיאוֹ בְשַׁבָּת מְגֻלֶּה. וּבַסַּכָּנָה, מְכַסֵּהוּ עַל פִּי עֵדִים. וְעוֹד אָמַר רַבִּי אֱלִיעֶזֶר, כּוֹרְתִין עֵצִים לַעֲשׂוֹת פֶּחָמִין וְלַעֲשׂוֹת כְּלִי בַרְזֶל. כְּלָל אָמַר רַבִּי עֲקִיבָא, כָּל מְלָאכָה שֶׁאֶפְשָׁר לַעֲשׂוֹתָהּ מֵעֶרֶב שַׁבָּת אֵינָהּ דּוֹחָה אֶת הַשַּׁבָּת, וְשֶׁאִי אֶפְשָׁר לַעֲשׂוֹתָהּ מֵעֶרֶב שַׁבָּת דּוֹחָה אֶת הַשַּׁבָּת:

סָפֵק וְאַנְדְּרוֹגִינוֹס אֵין מְחַלְּלִין עָלָיו אֶת הַשַּׁבָּת, וְרַבִּי יְהוּדָה מַתִּיר בְּאַנְדְּרוֹגִינוֹס:

אֵלּוּ הֵן צִיצִין הַמְעַכְּבִין אֶת הַמִּילָה, בָּשָׂר הַחוֹפֶה אֶת רֹב הָעֲטָרָה. וְאֵינוֹ אוֹכֵל בַּתְּרוּמָה. וְאִם הָיָה בַעַל בָּשָׂר, מְתַקְּנוֹ מִפְּנֵי מַרְאִית הָעָיִן. מָל וְלֹא פָרַע אֶת הַמִּילָה, כְּאִלּוּ לֹא מָל:

And all the requirements of circumcision may be performed for a baby whose eighth day of life occurs on Shabbat.

Rabbi Eliezer says: If he did not bring an implement for circumcising the child on Shabbat eve, he brings it on Shabbat itself uncovered so that it will be clear to all that he is bringing a circumcision scalpel. And in times of danger, when decrees of persecution prohibit Jews from circumcising their children, one covers it in the presence of witnesses who can testify that he transported the scalpel to perform a mitzva. And furthermore, Rabbi Eliezer said with regard to this issue: One may even cut down trees to prepare charcoal in order to fashion iron tools for the purpose of circumcision. Rabbi Eliezer’s approach was not universally accepted, and a principle was stated by Rabbi Akiva: Any prohibited labor that can be performed on Shabbat eve does not override Shabbat, including transporting the circumcision scalpel. However, any prohibited labor involved in the mitzva of circumcision itself that cannot be performed on Shabbat eve overrides Shabbat....

If there is uncertainty whether or not to circumcise a baby, and likewise in the case of a hermaphrodite [androginos] baby, who possesses both male and female genitals, one does not desecrate Shabbat to perform the circumcision, since it is not certain that the circumcision is required. And Rabbi Yehuda permits doing so for a hermaphrodite baby....

These are the shreds of flesh that invalidate the circumcision if they are not cut. The essential element of circumcision is the removal of the flesh that covers most of the corona, and a child that was not circumcised in this manner is considered uncircumcised, and he does not eat teruma offerings.And if he was properly circumcised but he was fleshy, and it appears as though he has not been properly circumcised, the circumcisor should correct it by circumcising more than necessary, to avoid the appearance of transgression, so he will not appear uncircumcised. If one circumcised but did not uncover the flesh at the area of the circumcision by folding back the thin membrane beneath the foreskin, it is as if he had not circumcised.

תָּנוּ רַבָּנַן, הַמָּל אוֹמֵר: ״אֲשֶׁר קִדְּשָׁנוּ בְּמִצְוֹתָיו וְצִוָּנוּ עַל הַמִּילָה״. אֲבִי הַבֵּן אוֹמֵר: ״אֲשֶׁר קִדְּשָׁנוּ בְּמִצְוֹתָיו וְצִוָּנוּ לְהַכְנִיסוֹ בִּבְרִיתוֹ שֶׁל אַבְרָהָם אָבִינוּ״. הָעוֹמְדִים אוֹמְרִים: ״כְּשֵׁם שֶׁנִּכְנַס לַבְּרִית, כָּךְ יִכָּנֵס לְתוֹרָה לְחוּפָּה וּלְמַעֲשִׂים טוֹבִים״.וְהַמְבָרֵךְ אוֹמֵר: ״אֲשֶׁר קִידֵּשׁ יָדִיד מִבֶּטֶן, חוֹק בִּשְׁאֵרוֹ שָׂם, וְצֶאֱצָאָיו חָתַם בְּאוֹת בְּרִית קֹדֶשׁ. עַל כֵּן בִּשְׂכַר זֹאת אֵל חַי חֶלְקֵנוּ [צוּרֵנוּ], צִוָּה לְהַצִּיל יְדִידוּת שְׁאֵרֵינוּ מִשַּׁחַת לְמַעַן בְּרִיתוֹ אֲשֶׁר שָׂם בִּבְשָׂרֵנוּ. בָּרוּךְ אַתָּה ה׳ כּוֹרֵת הַבְּרִית״.הַמָּל אֶת הַגֵּרִים אוֹמֵר: ״בָּרוּךְ אַתָּה ה׳ אֱלֹקֵינוּ מֶלֶךְ הָעוֹלָם אֲשֶׁר קִדְּשָׁנוּ בְּמִצְוֹתָיו וְצִוָּנוּ עַל הַמִּילָה״, וְהַמְבָרֵךְ אוֹמֵר: ״אֲשֶׁר קִדְּשָׁנוּ בְּמִצְוֹתָיו וְצִוָּנוּ לָמוּל אֶת הַגֵּרִים וּלְהַטִּיף מֵהֶם דַּם בְּרִית, שֶׁאִילְמָלֵא דַּם בְּרִית לֹא נִתְקַיְּימוּ שָׁמַיִם וָאָרֶץ, שֶׁנֶּאֱמַר: ׳אִם לֹא בְרִיתִי יוֹמָם וָלָיְלָה חוּקּוֹת שָׁמַיִם וָאָרֶץ לֹא שָׂמְתִּי׳. בָּרוּךְ אַתָּה ה׳ כּוֹרֵת הַבְּרִית״.

The Sages taught in a Tosefta that one who circumcises a child recites: Who has made us holy through His commandments, and commanded us concerning circumcision. The father of the circumcised child recites: Who has made us holy through His commandments, and commanded us to bring him into the covenant of Abraham, our father. Those standing there recite: Just as he has entered into the covenant, so may he enter into Torah, marriage, and good deeds.And the one who recites the additional blessing says: Who made the beloved one holy from the womb, marked the decree in his flesh, and gave his descendants the seal and the sign of the holy covenant. Therefore, as a reward for this, the living God, our Portion, commanded to deliver the beloved of our flesh from destruction, for the sake of His covenant that He set in our flesh. Blessed are You, Lord, Who establishes the covenant.One who circumcises converts says: Blessed are You, Lord, our God, King of the universe, Who made us holy with His commandments, and commanded us concerning circumcision. And the one who recites the additional blessing recites: Who has made us holy with His commandments, and commanded us to circumcise converts, and to drip from them covenantal blood, as were it not for the blood of the covenant, the heaven and earth would not be sustained, as it is stated: “If My covenant would not be with day and night, the ordinances of heaven and earth I would not have placed” (Jeremiah 33:25), which is interpreted to mean that were it not for the covenant of circumcision that is manifest both day and night, the world would cease to exist. He concludes the blessing with the phrase: Blessed are You, Lord, Who establishes the covenant.

לימא מסייע ליה הכל שוחטין ואפילו כותי ואפילו ערל ואפילו ישראל מומר האי ערל ה"ד אילימא שמתו אחיו מחמת מילה האי ישראל מעליא הוא אלא פשיטא מומר לערלותאימא סיפא ואפילו ישראל מומר ה"ד אי מומר לדבר אחד היינו מומר לערלות אלא לאו מומר לעבודת כוכבים וכדרב ענןלא לעולם אימא לך מומר לעבודת כוכבים לא דאמר מר חמורה עבודת כוכבים שכל הכופר בה כמודה בכל התורה כולה

Let us say that the following baraitasupports the opinion of Rav Anan, who says that it is permitted to eat from the slaughter of a Jew who is a transgressor with regard to idol worship: Everyone slaughters, and even a Samaritan, and even an uncircumcised man, and even a Jewish transgressor. The Gemara analyzes the baraita: This uncircumcised man, what are the circumstances? If we say that he is an uncircumcised man whose brothers died due to circumcision and the concern is that he might suffer a similar fate, clearly one may eat from what he slaughters, as he is a full-fledged Jew and not a transgressor at all. Rather, it is obvious that he is a transgressor with regard to remaining uncircumcised, as he refuses to be circumcised.Say the latter clause of the baraita: And even a Jewish transgressor. What are the circumstances? If he is a transgressor with regard to one matter, that is identical to the case of a transgressor with regard to remaining uncircumcised. Rather, is it not that he is a transgressor with regard to idol worship, and it is in accordance with the opinion of Rav Anan?The Gemara rejects that proof: No, actually I will say to you that a transgressor with regard to idol worship may not slaughter, as the Master said: Idol worship is a severe transgression, as with regard to anyone who denies it, it is as though he acknowledges his acceptance of the entire Torah.

תַּנְיָא רַבִּי אוֹמֵר גְּדוֹלָה מִילָה שֶׁאֵין לָךְ מִי שֶׁנִּתְעַסֵּק בְּמִצְוֹת כְּאַבְרָהָם אָבִינוּ וְלֹא נִקְרָא תָּמִים אֶלָּא עַל שֵׁם מִילָה שֶׁנֶּאֱמַר הִתְהַלֵּךְ לְפָנַי וֶהְיֵה תָמִים וּכְתִיב וְאֶתְּנָה בְרִיתִי בֵּינִי וּבֵינֶךָדָּבָר אַחֵר גְּדוֹלָה מִילָה שֶׁשְּׁקוּלָה כְּנֶגֶד כׇּל הַמִּצְוֹת שֶׁבַּתּוֹרָה שֶׁנֶּאֱמַר כִּי עַל פִּי הַדְּבָרִים הָאֵלֶּה וְגוֹ׳ דָּבָר אַחֵר גְּדוֹלָה מִילָה שֶׁאִילְמָלֵא מִילָה לֹא נִתְקַיְּימוּ שָׁמַיִם וָאָרֶץ שֶׁנֶּאֱמַר אִם לֹא בְּרִיתִי יוֹמָם וָלָיְלָה וְגוֹ׳וּפְלִיגָא דְּרַבִּי אֱלִיעֶזֶר דְּאָמַר רַבִּי אֱלִיעֶזֶר גְּדוֹלָה תּוֹרָה שֶׁאִילְמָלֵא תּוֹרָה לֹא נִתְקַיְּימוּ שָׁמַיִם וָאָרֶץ שֶׁנֶּאֱמַר אִם לֹא בְרִיתִי יוֹמָם וָלָיְלָה חֻקּוֹת שָׁמַיִם וָאָרֶץ לֹא שָׂמְתִּי וְגוֹ׳אָמַר רַב יְהוּדָה אָמַר רַב בְּשָׁעָה שֶׁאָמַר לוֹ הַקָּדוֹשׁ בָּרוּךְ הוּא לְאַבְרָהָם אָבִינוּ הִתְהַלֵּךְ לְפָנַי וֶהְיֵה תָמִים אֲחָזַתּוּ רְעָדָה אָמַר שֶׁמָּא יֵשׁ בִּי דָּבָר מְגוּנֶּה כֵּיוָן שֶׁאָמַר לוֹ וְאֶתְּנָה בְרִיתִי בֵּינִי וּבֵינֶךָ נִתְקָרְרָה דַּעְתּוֹ... אָמַר רַבִּי יִצְחָק כׇּל הַמְתַמֵּים עַצְמוֹ הַקָּדוֹשׁ בָּרוּךְ הוּא מִתַּמֵּים עִמּוֹ שֶׁנֶּאֱמַר עִם חָסִיד תִּתְחַסָּד עִם גִּבּוֹר תָּמִים תִּתַּמָּםאָמַר רַבִּי הוֹשַׁעְיָא כׇּל הַמְתַמֵּים עַצְמוֹ שָׁעָה עוֹמֶדֶת לוֹ שֶׁנֶּאֱמַר הִתְהַלֵּךְ לְפָנַי וֶהְיֵה תָמִים וּכְתִיב וְהָיִיתָ לְאַב הֲמוֹן גּוֹיִם

It is taught in a baraita: Rabbi Yehuda HaNasi says: Great is the mitzva of circumcision, for there is no one who was engaged in mitzvot like Abraham our Patriarch, and yet he was called wholehearted only due to the mitzva of circumcision, as it is stated: “Walk before Me and you should be wholehearted” (Genesis 17:1), and it is written in the next verse: “And I will make My covenant between Me and you” (Genesis 17:2), and Abraham was then commanded with regard to circumcision. This indicates that he was not called wholehearted until he performed circumcision.Alternatively, so great is the mitzva of circumcision that it is equal to all the mitzvot of the Torah, as it is stated at the giving of the Torah: “For according to these words I have made a covenant with you and with Israel” (Exodus 34:27), and “covenant” refers to circumcision. Alternatively, so great is the mitzva of circumcision that if not for circumcision heaven and earth would not have been established, as it is stated: “If My covenant be not with day and night, I would not have appointed the ordinances of heaven and earth” (Jeremiah 33:25), and the covenant that exists day and night is the covenant of circumcision, as it is always found on the person’s body.The Gemara comments: And this statement disagrees with the words of Rabbi Eliezer, for Rabbi Eliezer said: Great is the Torah, for if not for Torah, heaven and earth would not have been established, as it is stated: “If My covenant be not with day and night, I would not have appointed the ordinances of heaven and earth” (Jeremiah 33:25). According to Rabbi Eliezer, the covenant that exists day and night is the Torah, as it says: “You should contemplate it day and night” (Joshua 1:8).Rav Yehuda said that Rav said: At the time that the Holy One, Blessed be He, said to Abraham our Patriarch: “Walk before Me and you should be wholehearted” (Genesis 17:1), a sensation of trembling seized him and he said: Perhaps there is something disgraceful about me due to a transgression that I committed, and therefore I cannot be called complete. When God said to him: “And I will make My covenant between Me and you” (Genesis 17:2), his mind was set at ease, since he understood that the removal of the foreskin that he was now commanded to do was the reason he had not yet achieved completion....Rabbi Yitzḥak said: Anyone who conducts himself with wholeheartedness, the Holy One, Blessed be He, treats him with wholeheartedness, as it is stated: “With the devout You act devoutly, and with the one who is strong in his wholeheartedness You act wholeheartedly” (II Samuel 22:26).Rabbi Hoshaya said: Anyone who acts wholeheartedly, time will stand for him, i.e., he will be successful, as it is stated: “Walk before Me and you should be wholehearted” (Genesis 17:1), and it is written: “And you shall be the father of a multitude of nations” (Genesis 17:4).

הַשָּׂטָן בְּחוּשְׁבָּנֵיהּ תְּלָת מְאָה וְשִׁיתִּין וְאַרְבְּעָה וְאָמַר רָמֵי בַּר אַבָּא כְּתִיב אַבְרָם וּכְתִיב אַבְרָהָם בַּתְּחִלָּה הִמְלִיכוֹ הַקָּדוֹשׁ בָּרוּךְ הוּא עַל מָאתַיִם וְאַרְבָּעִים וּשְׁלֹשָׁה אֵבָרִים וּלְבַסּוֹף הִמְלִיכוֹ עַל מָאתַיִם וְאַרְבָּעִים וּשְׁמוֹנֶה אֵבָרִיםאֵלּוּ הֵן שְׁתֵּי עֵינַיִם וּשְׁתֵּי אׇזְנַיִם וְרֹאשׁ הַגְּוִיָּיה

The letters of the term the Satan [haSatan] in numerical value is 364, which equals the number of days of the year, except for Yom Kippur, during which he has no power. And Rami bar Abba said: It is written “Abram,” and after he was commanded to perform circumcision it is written “Abraham” (Genesis 17:5). Initially the Holy One, Blessed be He, enthroned him as ruler over 243 limbs, which is the numerical equivalent of the letters of the word Abram. And in the end, after he was circumcised, He enthroned him as ruler over 248 limbs, which is the numerical equivalent of the letters of the word Abraham.These are the additional limbs: Two eyes, and two ears, and the tip of the sex organ. Following his circumcision, he had total control over them, and they performed only according to his will.

ערל: מנלן אמר רב חסדא דבר זה מתורת משה רבינו לא למדנו מדברי יחזקאל בן בוזי למדנו (יחזקאל מד, ט) כל בן נכר ערל לב וערל בשר לא יבא אל מקדשי (לשרתני)ומנלן דמחלי עבודה דכתיב (יחזקאל מד, ז) בהביאכם (את) בני נכר ערלי לב וערלי בשר להיות במקדשי לחלל את ביתי:תנו רבנן בן נכר יכול בן נכר ממש תלמוד לומר ערל לב אם כן מה תלמוד לומר בן נכר שנתנכרו מעשיו לאביו שבשמים ואין לי אלא ערל לב ערל בשר מנין תלמוד לומר וערל בשרוצריכי דאי כתב רחמנא ערל בשר משום דמאיס אבל ערל לב דלא מאיס אימא לא ואי אשמעינן ערל לב משום דאין לבו לשמים אבל ערל בשר דלבו לשמים אימא לא צריכי:

The mishna teaches that a priest who is uncircumcised disqualifies sacrificial rites he performs. The Gemara elaborates: From where do we derive this? Rav Ḥisda says: We did not learn this matter from the Torah of Moses, our teacher; rather, we learned it from the words of the prophet Ezekiel, son of Buzi: “No stranger, uncircumcised in heart or uncircumcised in flesh, shall enter into My Sanctuary to serve Me” (Ezekiel 44:9).And from where do we derive that he desecrates the service after the fact? As it is written: “In that you have brought in strangers, uncircumcised in heart or uncircumcised in flesh, to be in My Sanctuary, to profane My house” (Ezekiel 44:7).The Sages taught: The verse states “stranger”; one might have thought that this is referring to an actual stranger, i.e., a gentile. Therefore, the verse states: “Uncircumcised in heart,” to indicate that it is referring to a priest rather than a gentile. If so, what is the meaning when the verse states: “Stranger”? It is referring to one whose actions are considered estranged from his Father in Heaven, i.e., an apostate, who sins regularly. And I have derived only that one uncircumcised in heart is unfit to serve; from where is it derived that one uncircumcised in flesh is unfit as well? The verse states: “Or uncircumcised in flesh.”The Gemara notes: And both phrases in the verse are necessary. As, had the Merciful One written only: “Uncircumcised in flesh,” one might think that only he is unfit because he is disgusting in that he possesses a foreskin, but concerning one uncircumcised in heart, who is not disgusting, I will say that he is not unfit. And had the verse taught us only that one uncircumcised in heart is unfit, one might think that only he is unfit, because his heart is not directed toward Heaven, but one uncircumcised in flesh, whose heart is directed toward Heaven, I will say that he is not unfit. Therefore, both phrases are necessary.

תָּנוּ רַבָּנַן גֵּר שֶׁמָּל וְלֹא טָבַל רַבִּי אֱלִיעֶזֶר אוֹמֵר הֲרֵי זֶה גֵּר שֶׁכֵּן מָצִינוּ בַּאֲבוֹתֵינוּ שֶׁמָּלוּ וְלֹא טָבְלוּ טָבַל וְלֹא מָל רַבִּי יְהוֹשֻׁעַ אוֹמֵר הֲרֵי זֶה גֵּר שֶׁכֵּן מָצִינוּ בָּאִמָּהוֹת שֶׁטָּבְלוּ וְלֹא מָלוּ וַחֲכָמִים אוֹמְרִים טָבַל וְלֹא מָל מָל וְלֹא טָבַל אֵין גֵּר עַד שֶׁיָּמוּל וְיִטְבּוֹלוְרַבִּי יְהוֹשֻׁעַ נָמֵי נֵילַף מֵאָבוֹת וְרַבִּי אֱלִיעֶזֶר נָמֵי נֵילַף מֵאִמָּהוֹת וְכִי תֵימָא אֵין דָּנִין אֶפְשָׁר מִשֶּׁאִי אֶפְשָׁר...אֶלָּאבְּטָבַל וְלֹא מָל כּוּלֵּי עָלְמָא לָא פְּלִיגִי דְּמַהְנֵי כִּי פְּלִיגִי בְּמָל וְלֹא טָבַל רַבִּי אֱלִיעֶזֶר יָלֵיף מֵאָבוֹת וְרַבִּי יְהוֹשֻׁעַ בְּאָבוֹת נָמֵי טְבִילָה הֲוָה... אָמַר רַבָּה עוֹבָדָא הֲוָה בֵּי רַבִּי חִיָּיא בַּר רַבִּי וְרַב יוֹסֵף מַתְנִי רַבִּי אוֹשַׁעְיָא בַּר רַבִּי וְרַב סָפְרָא מַתְנֵי רַבִּי אוֹשַׁעְיָא בְּרַבִּי חִיָּיא דַּאֲתָא לְקַמֵּיהּ גֵּר שֶׁמָּל וְלֹא טָבַל אָמַר לֵיהּ שְׁהִי כָּאן עַד לִמְחַר וְנַטְבְּלִינָךְ שְׁמַע מִינַּהּ תְּלָת שְׁמַע מִינַּהּ גֵּר צָרִיךְ שְׁלֹשָׁה וּשְׁמַע מִינַּהּ אֵינוֹ גֵּר עַד שֶׁיָּמוּל וְיִטְבּוֹל וּשְׁמַע מִינַּהּ אֵין מַטְבִּילִין גֵּר בַּלַּיְלָה

The Sages taught in a baraita: With regard to a convert who was circumcised but did not immerse, Rabbi Eliezer says that this is a convert, as so we found with our forefathers following the exodus from Egypt that they were circumcised but were not immersed. With regard to one who immersed but was not circumcised, Rabbi Yehoshua says that this is a convert, as so we found with our foremothers that they immersed but were not circumcised. And the Rabbis say: Whether he immersed but was not circumcised or whether he was circumcised but did not immerse, he is not a convert until he is circumcised and he immerses.The Gemara questions the opinions in the baraita: But let Rabbi Yehoshua also derive what is required for conversion from our forefathers; why didn’t he do so? And let Rabbi Eliezer also derive the halakhafrom our foremothers; why didn’t he do so? And if you would say that Rabbi Eliezer did not derive the halakha from our foremothers because he holds one cannot derive the possible from the impossible, i.e., one cannot derive that men do not require circumcision from the halakha that women do not require it, because for women it is a physical impossibility, that claim may be refuted....The Gemara concedes: Rather, the baraita must be reinterpreted as follows:With regard to one who immersed but was not circumcised, everyone, i.e., both Rabbi Yehoshua and Rabbi Eliezer, agrees that the halakha is derived from the foremothers that immersion alone is effective. Where they disagree is with regard to one who was circumcised but had not immersed; Rabbi Eliezer derives that it is effective from the forefathers, and Rabbi Yehoshua disagrees because he maintains that in the conversion of the forefathers there was also an immersion....Rabba said: There was an incident in the house of Rabbi Ḥiyya bar Rabbi, and as Rav Yosef teaches it, Rabbi Oshaya bar Rabbi was also present, and as Rav Safra teaches it, a third Sage, Rabbi Oshaya, son of Rabbi Ḥiyya, was also present, in which a convert came before him who was circumcised but had not immersed. He said to the convert: Remain here with us until tomorrow, and then we will immerse you.Rabba said: Learn from this incident three principles: Learn from it that a convert requires a court of three people to preside over the conversion, as Rav Safra taught that the case involved three Sages. And learn from it that one is not considered to be a convert until he has been both circumcised and immersed. And learn from it that the court may not immerse a convert at night, as they instructed him to remain there until the following day.

אמר ליה קיסר לר' תנחום תא ליהוו כולן לעמא חד אמר לחיי אנן דמהלינן לא מצינן מיהוי כוותייכו אתון מהליתו והוו כוותן א"ל מימר שפיר קאמרת מיהו כל דזכי למלכא לשדיוה לביבר שדיוה לביבר ולא אכלוה א"ל ההוא מינא האי דלא אכלוה משום דלא כפין הוא שדיוה ליה לדידיה ואכלוה

The Gemara relates: The emperor said to Rabbi Tanḥum: Come, let us all be one people. Rabbi Tanḥum said: Very well. But we, who are circumcised, cannot become uncircumcised as you are; you all circumcise yourselves and become like us. The emperor said to Rabbi Tanḥum: In terms of the logic of your statement, you are saying well, but anyone who bests the king in a debate is thrown to the enclosure [labeivar] of wild animals. They threw him to the enclosure but the animals did not eat him, as God protected him. A certain heretic said to the emperor: This incident, that they did not eat him, happened because they are not hungry. They then threw the heretic into the enclosure and the animals ate him.

בעומד במרדו ורבי היא דתניא רבי אומר על כל עבירות שבתורה בין עשה תשובה בין לא עשה תשובה יום הכפורים מכפר חוץ מפורק עול ומגלה פנים בתורה ומפר ברית בבשר שאם עשה תשובה יום הכפורים מכפר ואם לאו אין יום הכפורים מכפר

The mishna is referring to a case where the person did not repent and persists in his rebellion, and it is in accordance with the opinion of Rabbi Yehuda HaNasi, that even for such a case Yom Kippur and the scapegoat will atone. As it is taught in a baraita: Rabbi Yehuda HaNasi says: For all transgressions that are stated in the Torah, whether one repented, or whether one did not repent, Yom Kippur atones, except for one who divests himself of the yoke of Heaven, by denying God’s existence, and one who reveals facets of the Torah that differ from its true meaning, and one who nullifies the covenant of circumcision of the flesh. For these, if one repented, Yom Kippur atones, and if not, Yom Kippur does not atone.