Jeremiah 17:1

"The sin of Judah has been written with a pen of iron and a point of diamond. It has been engraved upon the breadth of their heart and upon the horns of their shrines

Other versions

King James Version

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;

English Standard Version

"The sin of Judah is written with a pen of iron; with a point of diamond it is engraved on the tablet of their heart, and on the horns of their altars,

New International Version

"Judah's sin is engraved with an iron tool, inscribed with a flint point, on the tablets of their hearts and on the horns of their altars.