הֲרָרִי֙ בַּשָּׂדֶ֔ה חֵילְךָ֥ כָל־אוֹצְרוֹתֶ֖יךָ לָבַ֣ז אֶתֵּ֑ן בָּמֹתֶ֕יךָ בְּחַטָּ֖את בְּכָל־גְּבוּלֶֽיךָ׃
О ты, восседающий на горе в поле, Я дам твою субстанцию и все твои сокровища для добычи, и твои высокие места, из-за греха, по всей твоей границе.
Rashi on Jeremiah
You, who sit upon the mountain in the field Jerusalem that is situated on the mountain of the plain. All around the city is a fielded plain. The structure of הֲרָרִי is like עֲרָבִי, called so because he dwells in the plain (עֲרָבָה) (montanyers in O.F), mountain dwellers (other versions: a mountain dweller).
Rashi on Jeremiah
Your high places are made for sin Your high places are made in sin for the purpose of idolatry within all your borders.