Passage
“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.
“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.
Jeremiah 17:1 “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.
Jeremiah 17:2 Even their children remember their altars and their Asherah poles by the green trees on the high hills.
Jeremiah 17:3 My mountain in the field, I will give your substance and all your treasures for a plunder, and your high places, because of sin, throughout all your borders.
The verse centers on "judah", "written", "iron", "point", "diamond", "engraved", "tablet", and "heart". It is saying that the verse draws attention to "judah" and "written", so its meaning should be read from those terms before moving to application.
The next verse adds "Even their children remember their altars and...", so "judah" and "written" should be read forward into that movement. In Jeremiah context, the local focus is covenant, worship, and faithfulness.
A plain takeaway is to answer the verse's own emphasis on "judah" and "written" with trust shaped by these words, not by a vague optimism outside the passage.