Romans 11:8

according as it is written [Isaiah 29:10; Ezekiel 12:2; Deuteronomy 29:4], God gave them a spirit of stupor, eyes that they should not see, and ears that they should not hear, unto this very day. [As the passage quoted is a combination of Isaiah and Deuteronomy, and is found in part also in Ezekiel, it suggests that the spirit of stupor, deafness and blindness characterized the course of Israel from beginning to end; and it was therefore to be guarded against as a chronic sin. Katanuxis (stupor) may be derived from katanussoo (Fritsche, Meyer), which means to prick or sting, and hence, as in bites of reptiles, etc., to cause stupefaction; or it may come from katanuzoo (Volkmar), which means to bend the head in order to sleep, to fall asleep. It is used in Psalms 60:3; where it is translated "wine of staggering," though Hammond contends that the passage refers to the stupefying wine given to them who were to be put to death. It means, then, that condition of stupor, or intellectual numbness, which is almost wholly insensate; for the term "spirit" means a pervading tendency. "Such expressions," says Gifford, "as 'the spirit of heaviness' (Isaiah 61:3), 'a spirit of meekness' (1 Corinthians 4:21), 'the spirit of bondage' (Romans 8:15), show that 'spirit' is used for the pervading tendency and tone of mind, the special character of which is denoted by the genitive which follows."]