Genesis 34:23

הָאֲנָשִׁים הָאֵלֶּה שְֽׁלֵמִים הֵם אִתָּנוּ וְיֵשְׁבוּ בָאָרֶץ וְיִסְחֲרוּ אֹתָהּ וְהָאָרֶץ הִנֵּה רַֽחֲבַת־יָדַיִם לִפְנֵיהֶם אֶת־בְּנֹתָם נִקַּֽח־לָנוּ לְנָשִׁים וְאֶת־בְּנֹתֵינוּ נִתֵּן לָהֶֽם

’These men are peaceable with us; therefore let them dwell in the land, and trade therein; for, behold, the land is large enough for them; let us take their daughters to us for wives, and let us give them our daughters.

אַךְ־בְּזֹאת יֵאֹתוּ לָנוּ הָאֲנָשִׁים לָשֶׁבֶת אִתָּנוּ לִהְיוֹת לְעַם אֶחָד בְּהִמּוֹל לָנוּ כָּל־זָכָר כַּאֲשֶׁר הֵם נִמֹּלִֽים

Only on this condition will the men consent unto us to dwell with us, to become one people, if every male among us be circumcised, as they are circumcised.

וַיִּשְׁמְעוּ אֶל־חֲמוֹר וְאֶל־שְׁכֶם בְּנוֹ כָּל־יֹצְאֵי שַׁעַר עִירוֹ וַיִּמֹּלוּ כָּל־זָכָר כָּל־יֹצְאֵי שַׁעַר עִירֽוֹ

And unto Hamor and unto Shechem his son hearkened all that went out of the gate of his city; and every male was circumcised, all that went out of the gate of his city.

וַיְהִי בַיּוֹם הַשְּׁלִישִׁי בִּֽהְיוֹתָם כֹּֽאֲבִים וַיִּקְחוּ שְׁנֵֽי־בְנֵי־יַעֲקֹב שִׁמְעוֹן וְלֵוִי אֲחֵי דִינָה אִישׁ חַרְבּוֹ וַיָּבֹאוּ עַל־הָעִיר בֶּטַח וַיַּֽהַרְגוּ כָּל־זָכָֽר

And it came to pass on the third day, when they were in pain, that two of the sons of Jacob, Simeon and Levi, Dinah’s brethren, took each man his sword, and came upon the city unawares, and slew all the males.