Reference for Psalms 69:24

תֶּחְשַׁ֣כְנָה עֵ֭ינֵיהֶם מֵרְא֑וֹת וּ֝מָתְנֵ֗יהֶם תָּמִ֥יד הַמְעַֽד׃

Let their eyes be darkened, that they see not; And make their loins continually to totter.