עַל־מִצְרַ֣יִם וְעַל־יְהוּדָ֗ה וְעַל־אֱד֞וֹם וְעַל־בְּנֵ֤י עַמּוֹן֙ וְעַל־מוֹאָ֔ב וְעַל֙ כָּל־קְצוּצֵ֣י פֵאָ֔ה הַיֹּשְׁבִ֖ים בַּמִּדְבָּ֑ר כִּ֤י כָל־הַגּוֹיִם֙ עֲרֵלִ֔ים וְכָל־בֵּ֥ית יִשְׂרָאֵ֖ל עַרְלֵי־לֵֽב׃ (ס)
contre l’Égypte et Juda, contre Edom, contre les fils d’Ammon et Moab, et contre tous les habitants du désert qui se taillent les coins de la barbe; car si tous ces peuples sont incirconcis, toute la maison d’Israël a, elle, le cœur incirconcis.
Mishneh Torah, Circumcision
The foreskin is regarded as an abomination, for which the gentiles are contemned in Scripture, as it is said "For all the nations are uncircumcised (Jer. 9-25). An important institution is Circumcision. For the Patriarch Abraham was not called perfect till he had circumcised himself, as it is said, "Walk thou before me; and be thou perfect. And I will make my covenant between Me and thee" (Gen. 17:1-2). Whoever neglects the covenant of our ancestor Abraham, and retains the foreskin or artificially obliterates the marks of circumcision, even if he has acquired much knowledge of the Torah and practises good deeds, will have no portion in the world to come.