הֲנָשׁוּב֙ לְהָפֵ֣ר מִצְוֺתֶ֔יךָ וּ֨לְהִתְחַתֵּ֔ן בְּעַמֵּ֥י הַתֹּעֵב֖וֹת הָאֵ֑לֶּה הֲל֤וֹא תֶֽאֱנַף־בָּ֙נוּ֙ עַד־כַּלֵּ֔ה לְאֵ֥ין שְׁאֵרִ֖ית וּפְלֵיטָֽה׃ (פ)
shall we again break Thy commandments, and make marriages with the peoples that do these abominations? wouldest not Thou be angry with us till Thou hadst consumed us, so that there should be no remnant, nor any to escape?
Read halakhic rulings (Jewish law) on Ezra 9:14: and classical halakhic sources.