Gen 17:14

וְעָרֵ֣ל זָכָ֗ר אֲשֶׁ֤ר לֹֽא־יִמּוֹל֙ אֶת־בְּשַׂ֣ר עָרְלָת֔וֹ וְנִכְרְתָ֛ה הַנֶּ֥פֶשׁ הַהִ֖וא מֵעַמֶּ֑יהָ אֶת־בְּרִיתִ֖י הֵפַֽר׃ ס

But if any male is not circumcised, he will be cut off from his people; he has broken My covenant.”