רָאִ֙יתִי֙ הֶֽהָרִ֔ים וְהִנֵּ֖ה רֹעֲשִׁ֑ים וְכָל־הַגְּבָע֖וֹת הִתְקַלְקָֽלוּ׃
我觀看群山，看哪，山都在震動；眾丘陵也都搖來晃去。
Rashi
moved to and fro Heb. התקלקלו, they were uprooted and cast out of their place. Menahem associates it with: “He shakes the arrows to and fro (קלקל)” (Ezek. 21:26).