King James Version (KJV)
The sin of Judah {is} written with a pen of iron, {and} with the point of a diamond: {it is} graven upon the table of their heart, and upon the horns of your altars; {point: Heb. nail}
Modern English
“The sin of Judah is written with a pen of iron, and with the point of a diamond. It is engraved on the tablet of their heart, and on the horns of your altars.
Hebrew
חַטַּ֣את יְהוּדָ֗ה כְּתוּבָ֛ה בְּעֵ֥ט בַּרְזֶ֖ל בְּצִפֹּ֣רֶן שָׁמִ֑יר חֲרוּשָׁה֙ עַל־ל֣וּחַ לִבָּ֔ם וּלְקַרְנ֖וֹת מִזְבְּחוֹתֵיכֶֽם׃
ḥaṭaʾt yhvdah ktvbah bʿeṭ barzel bṣiporen shamiyr ḥarvshah ʿal-lvḥa libam vlqarnvot mizbḥvoteykem