King James Version (KJV)
And I will give them an heart to know me, that I {am} the LORD: and they shall be my people, and I will be their God: for they shall return unto me with their whole heart.
Modern English
I will give them a heart to know me, that I am Yahweh. They will be my people, and I will be their God; for they will return to me with their whole heart.
Hebrew
וְנָתַתִּי֩ לָהֶ֨ם לֵ֜ב לָדַ֣עַת אֹתִ֗י כִּ֚י אֲנִ֣י יְהוָ֔ה וְהָיוּ־לִ֣י לְעָ֔ם וְאָ֣נֹכִ֔י אֶהְיֶ֥ה לָהֶ֖ם לֵאלֹהִ֑ים כִּֽי־יָשֻׁ֥בוּ אֵלַ֖י בְּכָל־לִבָּֽם׃
vnatatiy lahem leb ladaʿat ʾotiy kiy ʾaniy yhvah vhayv-liy lʿam vʾanokiy ʾehyeh lahem leʾlohiym kiy-yashubv ʾelay bkal-libam