King James Version (KJV)
For with stammering lips and another tongue will he speak to this people. {stammering...: Heb. stammerings of lip} {will...: or, he hath spoken}
Modern English
But he will speak to this nation with stammering lips and in another language;
Hebrew
כִּ֚י בְּלַעֲגֵ֣י שָׂפָ֔ה וּבְלָשׁ֖וֹן אַחֶ֑רֶת יְדַבֵּ֖ר אֶל־הָעָ֥ם הַזֶּֽה׃
kiy blaʿagey shapah vblashvon ʾaḥeret ydaber ʾel-haʿam hazeh