ירמיהו יז:ג פירוש: רש״י

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).

your substance like מָמוֹנְךָ, your money.

Your high places are made for sin Your high places are made in sin for the purpose of idolatry within all your borders.