King James Version (KJV)
And ye, in any wise keep {yourselves} from the accursed thing, lest ye make {yourselves} accursed, when ye take of the accursed thing, and make the camp of Israel a curse, and trouble it. {accursed: or, devoted} {a curse: or, devoted}
Modern English
But as for you, only keep yourselves from what is devoted to destruction, lest when you have devoted it, you take of the devoted thing; so you would make the camp of Israel accursed, and trouble it.
Hebrew
וְרַק־אַתֶּם֙ שִׁמְר֣וּ מִן־הַחֵ֔רֶם פֶּֽן־תַּחֲרִ֖ימוּ וּלְקַחְתֶּ֣ם מִן־הַחֵ֑רֶם וְשַׂמְתֶּ֞ם אֶת־מַחֲנֵ֤ה יִשְׂרָאֵל֙ לְחֵ֔רֶם וַעֲכַרְתֶּ֖ם אוֹתֽוֹ׃
vraq-ʾatem shimrv min-haḥerem pen-taḥariymv vlqaḥtem min-haḥerem vshamtem ʾet-maḥaneh yishraʾel lḥerem vaʿakartem ʾvotvo