Jeremiah 17:1 in the World English Bible
“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.
Context
1 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;
2 Whilst their children remember their altars and their groves by the green trees upon the high hills.