A spirit of stupor (pneuma katanuxew). The quotation is a combination of Deuteronomy 19:4 ; Isaiah 29:10 ; Isaiah 6:9 . This phrase is from Isaiah 29:10 . Katanuxi is a late and rare word from katanussw, to prick or stick ( Acts 2:37 ), in LXX, here only in N.T., one example in Pelagia-Legende. The torpor seems the result of too much sensation, dulled by incitement into apathy. That they should not see (tou mh blepein). Genitive articular infinitive of negative purpose. That they should not hear (tou mh akouein). So here also. See Stephen's speech ( Acts 7:51 ).