לֹ֤א יָֽדְע֨וּ ׀ וְלֹ֥א יָבִ֗ינוּ בַּחֲשֵׁכָ֥ה יִתְהַלָּ֑כוּ יִ֝מּ֗וֹטוּ כָּל־מ֥וֹסְדֵי אָֽרֶץ׃
They know not, neither do they understand; they go about in darkness; all the foundations of the earth are moved.
Rashi on Psalms
and they do not understand that because of this iniquity, they will walk in the dark (on the order of [Exod. 23:8]: “for bribery blinds, etc.”), and all the foundations of the earth will totter because of it.