A.T. Robertson Commentary Romans 11:10

"Let their eyes be darkened, that they may not see, And bow thou down their back always." — Romans 11:10 (ASV)

Let their eyes be darkened (σκοτισθητωσαν ο οφθαλμο αυτων). First aorist passive imperative of σκοτιζω, to darken. A terrible imprecation.

That they may not see (του μη βλεπειν). Repeated from verse 8.

Bow down (συνκαμψον). First aorist active imperative of συνκαμπτω, old verb, to bend together as of captives whose backs (νωτον, another old word, only here in N.T.) were bent under burdens. Only here in N.T.