Isaiah 2:15 Midrash

וְעַ֖ל כָּל־מִגְדָּ֣ל גָּבֹ֑הַ וְעַ֖ל כָּל־חוֹמָ֥ה בְצוּרָֽה׃

And upon every lofty tower, And upon every fortified wall;