NET
40 “He has blinded their eyes and hardened their heart, so that they would not see with their eyes and understand with their heart, and turn to me, and I would heal them.”
Darby
40 He has blinded their eyes and hardened their heart, that they may not see with their eyes, and understand with their heart and be converted, and I should heal them.
KJV
40 He hath blinded their eyes, and hardened their heart; that they should not see with [their] eyes, nor understand with [their] heart, and be converted, and I should heal them.