Let their eyes be darkened, that they see not; and make their loins continually to shake.
Let their eyes be darkened, that they see not - just retribution, seeing that they would not see, but loved darkness rather than light (John 12:37; John 12:40; John 9:39; John 3:19). They who will not see the truth at last cannot see it. So the Jews when they rejected Messiah (Romans 11:8; Romans 11:10).
And make their loins continually to shake. Take away the strength of their loins (the seat of physical power), so that their steps shall totter. Let them have neither eyes to see, nor strength to perform anything.