וְהָיָ֣ה ׀ עַל־כָּל־הַ֣ר גָּבֹ֗הַ וְעַל֙ כָּל־גִּבְעָ֣ה נִשָּׂאָ֔ה פְּלָגִ֖ים יִבְלֵי־מָ֑יִם בְּיוֹם֙ הֶ֣רֶג רָ֔ב בִּנְפֹ֖ל מִגְדָּלִֽים׃
And there shall be upon every lofty mountain, and upon every high hill Streams and watercourses, In the day of the great slaughter, when the towers fall.
Read kabbalistic (mystical) interpretation of Isaiah 30:25: and classical mystical sources.