אָכֵ֥ן לַשֶּׁ֛קֶר מִגְּבָע֖וֹת הָמ֣וֹן הָרִ֑ים אָכֵן֙ בַּיהֹוָ֣ה אֱלֹהֵ֔ינוּ תְּשׁוּעַ֖ת יִשְׂרָאֵֽל׃
Truly vain have proved the hills, The uproar on the mountains; Truly in the LORD our God Is the salvation of Israel.
Rashi on Jeremiah
Truly, in vain we awaited from the hills and the multitude of mountains where we worshipped idols.